The Battle of Ap Bac was a major battle fought on January 3, 1963, during the Vietnam War. It was fought in Dinh Tuong Province (now part of Tiền Giang Province), South Vietnam. On December 28, 1962, U.S. intelligence detected the presence of a radio transmitter along with a sizable force of National Front for the Liberation of South Vietnam (FNL/Viet Cong) soldiers, reported to number around 120 in the hamlet of Ap Tan Thoi in Dinh Tuong Province, home of the ARVN 7th Infantry Division. To destroy the FNL, the South Vietnamese and their American advisers planned to attack Ap Tan Thoi from three directions by using two provincial Civil Guard battalions and elements of the 11th Infantry Regiment, ARVN 7th Infantry Division. The infantry units would be supported by artillery, M-113 armored personnel carriers and helicopters.
On the morning of January 2, 1963, the South Vietnamese Civil Guards spearheaded the attack by marching toward Ap Tan Thoi from the south. However, when they reached the hamlet of Ap Bac, which situation southeast of Ap Tan Thoi, they were immediately pinned down by elements of the Viet Cong 261st Battalion. Shortly afterwards, three companies of the 11th Infantry Regiment were committed into battle in northern Ap Tan Thoi, but they too could not overcome the FNL soldiers who had entrenched themselves in the area. Then just before midday, further reinforcements were flown in from Tan Hiep, and the fifteen U.S. helicopters ferrying the troops were riddled by Viet Cong gunfire, and five helicopters were lost as a result.
The ARVN 4th Mechanized Rifle Squadron was then deployed to save the South Vietnamese soldiers and American aircrews who were trapped in the south-western end of Ap Bac, but its commander was highly reluctant about moving heavy M-113 carriers across the local terrain. Ultimately, their presence made little difference as the FNL stood their ground and killed more than a dozen South Vietnamese M-113 crews in the process. Late in the afternoon, the ARVN 8th Airborne Battalion was dropped onto the battlefield and in a scene that characterized much of the day's fighting; the paratroopers were pinned down and could not break the FNL's line of defense. Under the cover of darkness the Viet Cong withdrew from the battlefield, having won their first major victory.
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Small-scale military actions, which would eventually escalate into the Vietnam War, started in the late 1950s, when South Vietnamese President Ngo Dinh Diem instituted an anti-Communist campaign aimed at rooting out "left behind" Viet Minh forces. At that time, North Vietnam was hoping for an election, promised under the Geneva Accords of 1954, that would unite North and South Vietnam. It was also worried about inciting the United States into directly supporting South Vietnam, and had recommended a policy of avoiding battle at all costs.[2] However, Diem's campaign was too successful to allow them to do nothing, and small-scale actions broke out across the country. North Vietnam remained worried about U.S. involvement and refused any sort of military support, forcing the remaining Viet Minh to retreat into inaccessible areas in the hills and river estuaries. A stalemate of sorts followed, as South Vietnamese forces took so long to reach these areas that the guerilla fighters were able to retreat with little difficulty.[2]
Large-scale American support began during the Kennedy Administration in the early 1960s, with the arrival of large numbers of the U.S. Special Forces to help out in the field.[3] The arrival of helicopters changed the nature of the battle considerably; it enabled South Vietnamese soldiers to quickly fly to almost any point in the country, leaving little time for a retreat. Throughout 1962, the combined forces were increasingly effective in routing the Viet Cong. These tactics, combined with the use of armored personnel carriers, took a heavy toll on various fledgling Viet Cong units.[4] The lightly armed Viet Cong had no weaponry capable of stopping the armored carriers and inevitably were forced to flee, taking heavy casualties.[5]
The most successful South Vietnamese force had been the 7th Infantry Division, then under the command of Colonel Huynh Van Cao. His U.S. adviser was Lieutenant Colonel John Paul Vann, who orchestrated much of the unit's activity in concert with his planner, Captain Richard Ziegler. They had scored the biggest successes of the pacification campaigns of 1962, killing thousands of Viet Cong fighters and leaving thousands of others cut off from supplies.[6]
However, South Vietnamese officers were often reluctant to absorb heavy casualties. On several occasions, Cao's forces were in excellent position to trap and wipe out whole battalions of Viet Cong, but he would fail to close the trap on one pretext or another and allow the enemy to escape. This behavior initially mystified Vann, who was attempting to build Cao into an aggressive commander.[7] Unknown to Vann, Diem would reprimand or demote any officer who lost too many men, no matter how successful the operation. Diem was more interested in using the military to protect his regime than to take on the Viet Cong.[8] His solution was to fill the ARVN with Catholic political cronies and friends like Cao, Le Quang Tung, and Ton That Dinh, who had little military ability, but were very likely to help stop a coup attempt. After a skirmish on a highway that resulted in a small number of South Vietnamese casualties along with several trucks destroyed, Cao was called to Saigon and reprimanded by Diem. Upon his return, Vann and his group of advisers were forced to end the joint planning sessions that had been so successful earlier, and action essentially wound down in their region.[9] Cao used the excellent military intelligence network they had developed to find areas devoid of the Viet Cong, and planned operations only in those areas. In many other cases, operations were executed on paper only, in order to report an increasing tempo of operations that did not actually exist.[10]
In 1962, Diem decided to split the command of the area in the south around Saigon into two, the former III Corps area being reduced in size to cover the area northeast of Saigon, and the newly created IV Corps taking over the west and southwest.[11] Cao was promoted to general and assumed command of the new IV Corps Tactical Zone, which included the area of operations of his 7th Infantry Division. Command of the 7th was given to Cao's chief of staff, Colonel Bui Dinh Dam. Dam expressed concerns about his own abilities when the promotion was first presented to him by Diem. Nevertheless, he took Cao's former position and welcomed Vann's advisers back into the planning effort. Despite the change in leadership, the same problems continued to manifest themselves in the 7th Infantry Division.[12]
In November 1962, the National Liberation Front's Military Region 2 ordered the Viet Cong 261st Battalion and the 514th Battalion, the home battalion of Dinh Tuong Province, to destroy the strategic hamlets in their region and at the same time to attack South Vietnamese sweeping operations.[13] Between December 28 and 30, 1962, an American aircraft equipped with eavesdropping equipment located a Viet Cong radio transmitter.[14] It intercepted radio signals in the hamlet of Ap Tan Thoi in Dinh Tuong Province where the ARVN 7th Infantry Division was headquartered. The radio intercept and other information obtained by Jim Drummond, Vann's intelligence officer, indicated that the Viet Cong were using Ap Tan Thoi as a headquarters location.[14] Furthermore, South Vietnamese and American intelligence personnel believed the Viet Cong had deployed a reinforced company of about 120 men to protect the transmitter. Certain that the Viet Cong unit was no larger than the reported number, the ARVN 7th Infantry Division was instructed to attack Ap Tan Thoi.[15]
An operational plan suited for an attack on a small enemy formation was drafted by Ziegler, who was an adviser to Dam and the command staff of the 7th Infantry Division. Ziegler's plan, codenamed Operation Duc Thang I,[16] called for the South Vietnamese to assault Ap Tan Thoi from three different directions; three rifle companies from the 11th Infantry Regiment, 7th Infantry Division, to move from the north; the Dinh Tuong Civil Guards Regiment[note 1] to march northward from the south in separate columns; and a company of 13 M-113 armored personnel carriers with an infantry company on board from the southwest.[17] The M-113 carriers and the infantry company could act as both a mobile reserve and a reaction force, so it was positioned where it could be shifted to the contact area if the Viet Cong began to retreat. In addition, Dam would also deploy two rifle companies at Tan Hiep airfield, which could be brought onto the battlefield by helicopters from the U.S. Army 93rd Transportation Company.[18]
On previous occasions, U.S. intelligence had tracked down the location of Viet Cong radio transmitters, but those were often relocated before the South Vietnamese launched their attacks, so Ziegler privately questioned if the Viet Cong had as many as 120 soldiers in Ap Tan Thoi.[1] However, in 1963, the National Liberation Front had changed their policy, from avoiding the South Vietnamese army to standing and fighting. The 1st Company, 261st Battalion and the 1st Company, 514th Battalion, had a total strength of 320 regular soldiers and were positioned in Ap Bac and Ap Tan Thoi respectively, which were separated by a distance of about 1.5 kilometers (0.93 mi). The combined companies were supported by approximately 30 local force soldiers from Chau Thanh District who served as scouts, ammunition bearers, litter carriers, and emergency replacements.[19] Together, elements of the Viet Cong 261st and 514th Battalions in Ap Tan Thoi and Ap Bac formed a 'composite battalion', which was placed under the commander of Colonel Hai Hoang.[20]
Previously, leadership of the 261st Battalion alternated between Hoang, a South Vietnamese revolutionary who had returned from North Vietnam after 1954, and Tu Khue, who was a native of North Vietnam. Khue was unpopular among the battalion's soldiers because he was known to be very strict and demanding, but very meticulous in terms of detail. In contrast, Hoang was far more relaxed and commanded a high degree of confidence from the soldiers of the 261st Battalion. Thus, due to his strong leadership skills and popularity, Hoang was selected to take command of Viet Cong forces for operations in Ap Bac.[20] Most of the soldiers under Hoang's command were equipped with captured U.S.-made weaponry, such as the M1 carbine, BAR light machine guns, .30 caliber machine guns, and a single 60mm mortar.[20]
In the days before the battle, Hoang anticipated a major attack from the South Vietnamese government, as Viet Cong intelligence agents in Dinh Tuong had reported the arrival of 71 truckloads of ammunition and other supplies from Saigon, about 65 kilometers (40 mi) to the northeast.[21] In addition, with information provided by Pham Xuan An, a well-connected journalist and undercover Viet Cong agent in Saigon, Hoang's soldiers conducted last-minute anti-helicopter and anti-M-113 training by studying U.S.-made weaponry and South Vietnamese plans and manuals.[22] The Viet Cong also took full advantage of the local terrain by taking up positions in Ap Tan Thoi in the north, along a tree-lined creek in the southeast, and Ap Bac in the south. Their positions were well-concealed by trees and shrubs, which made them difficult to see from the air and provided good protection from heavy weaponry.[23] To the south and west of Ap Bac, the Viet Cong dug a series of foxholes in front of an irrigation dike, which afforded them an unobstructed field of fire in the surrounding rice fields. The foxholes were deep enough for one man to stand up, or big enough to accommodate a two-man machine-gun crew. Behind the foxhole line, the irrigation dike enabled Viet Cong units to communicate with each other. In short, the Viet Cong enjoyed a great advantage over any attacking force.[17]
At 4:00 am on the morning of January 2, Viet Cong scouts around the hamlets of Ap Bac and Ap Tan Thoi reported hearing the sounds of truck and boat engines, so Hoang issued an alert order which prompted his troops to pick up their weapons and hurry to their foxholes.[24] Most of the women, children and old men in both hamlets fled and hid in the nearby swamps as soon as the order was issued.[25]
Thirty CH-21 Shawnee helicopters were needed to airlift the entire 1st Battalion, ARVN 11th Infantry Regiment, but only ten were available. As a result, Dam could only send one company at a time onto the battlefield. At around 7:00 am, the first wave of CH-21 helicopters offloaded the first group of South Vietnamese soldiers. They had to hold their positions until the rest of the battalions had arrived. Due to the delay in the arrival of the regular South Vietnamese army units, two Civil Guard battalions of Task Forces A and B—under the command of Dinh Tuong provincial chief Major Lam Quang Tho—were left to march against enemy positions by themselves.[17]
As planned, the first Civil Guard battalion of Task Force A started north towards Ap Bac.[17] Hoang knew the Civil Guard battalions were approaching, so he instructed his company commander in Ap Bac to be ready, as they would fire the first shots of the battle. Viet Cong radio operators, using captured U.S.-made communication equipment, followed the movements of the Civil Guards by monitoring the frequencies the government troops were using. When the leading Civil Guard battalion came within 30 meters (98 ft) of the southern end of Ap Bac, the Viet Cong opened fire from their foxholes and immediately killed the leading company's commander and wounded the task force commander.[26] Task Force A's momentum was stopped when the soldiers of the leading Civil Guard battalion sought shelter in a dike, where they tried unsuccessfully to outflank the Viet Cong. During that time, artillery support was ineffective, as Civil Guard forward observers would not stand up to observe the fall of artillery rounds. Consequently, one artillery round after another simply fell behind Viet Cong positions, instead of on their foxhole line. To make matters worst, Tho failed to send his second Civil Guard battalion of Task Force B to rescue the first.[26]
North of Ap Tan Thoi, three companies of the ARVN 11th Infantry Regiment fared no better. They marched south in three separate axes towards their objective. Again, well-concealed Viet Cong soldiers of the 514th Battalion allowed their opponents to come within 20 meters (66 ft) before opening fire.[27] Immediately, the South Vietnamese infantrymen were forced to hug the ground. During the next five hours, they managed to launch three major assaults, but failed to break the Viet Cong's line of defense. By 9:30 am, the last of Dam's reserve companies had been airlifted into Tan Hiep, about two hours late because American aircrews were prevented from landing their CH-21 helicopters, known as "Flying Bananas" for their shape, in the heavy fog that covered Tan Hiep airfield most of the morning. With the ground attacks in the north and south bogged down, Dam decided to stretch out the defending Viet Cong units by attacking the east and the west.[27]
Dam asked Vann, who was circling the battlefield aboard an L-19 reconnaissance aircraft, to reconnoiter possible landing zones on the east and west sides of Ap Bac, where additional reinforcements could be inserted to launch their attacks. In response, Vann asked his pilot to make low passes over the trees which covered Ap Bac.[27] Although he could not see any Viet Cong positions, Vann knew there was a well-fortified position at the southern end of the hamlet, due to the impact of the Viet Cong's firepower on the Civil Guards since the very beginning of the battle.[28] As Vann's L-19 aircraft flew over the western tree line, the Viet Cong watched from their foxholes, but held their fire because they knew the aircraft was trying to draw fire in order to mark their positions. Although Vann was suspicious, he decided it was a better landing zone because the area was tranquil despite the heavy fighting elsewhere.[28]
Vann then ordered his pilot to make contact with the other L-19 that was leading the ten CH-21s with the first South Vietnamese reserve company from Tan Hiep.[28] Vann relayed a message to the command pilot of the ten CH-21 helicopters, which were being escorted by a group of five recently deployed UH-1 Huey gunships, armed with 7.62mm machine guns and 2.75 inch rockets, and instructed him to land the reserve companies about 300 meters (980 ft) from the western and southern tree lines that covered Ap Bac in order to minimize the effectiveness of the Viet Cong's .30 caliber machine guns.[27] However, in the early phases of the Vietnam conflict, command relationships between U.S. military units were not well-established, and American aircrews had developed a tendency to disregard the instructions of advisors, especially Vann, who was perceived to be domineering. Instead of following Vann's instructions, the command pilot decided to lead his helicopters over southern Ap Tan Thoi and along the creek to Ap Bac. The American pilots landed their helicopters within 200 meters (660 ft) west of Ap Bac, where they were hit multiple times by Viet Cong machine gun and small arms fire.[28]
The five UH-1 gunships immediately strafed Viet Cong positions with 2.75 inch rockets, but failed to suppress the enemy fire. After South Vietnamese soldiers had disembarked from the helicopters, one CH-21 was too severely damaged to get off the ground.[29] A second CH-21 was sent to rescue the crew, but it too was immobilized as soon as it touched the ground. One of the Hueys returned to pick up the crews of the two downed CH-21 "Flying Bananas". As it prepared to land, the main rotor was struck by enemy gunfire. The aircraft flipped over to the right and crashed. Almost simultaneously, a third CH-21 sustained heavy damage and was forced to land on the rice fields a short distance from the first two helicopters.[30] By 10:30 am, all the South Vietnamese soldiers who had landed on the field were under heavy fire from inside Ap Bac and refused to move. Sergeant Arnold Bowers, who had ridden in the first crashed helicopter, raced back and forth to rescue injured American airmen.[31]
After Bowers had attended to the injured men, he borrowed a field radio from the South Vietnamese to coordinate artillery and air strikes. Later, two AD-6 Skyraiders arrived over Ap Bac and attacked the thatched houses with conventional bombs and napalm. The South Vietnamese soldiers, who were pinned down on the ground, believed their ordeal was over, so they stood up to see if the Viet Cong were retreating from their positions.[32] The Viet Cong fired on the exposed soldiers and killed several. Vann then radioed Captain James B. Scanlon—senior adviser to the ARVN 2nd Armored Cavalry Regiment—and told him that four U.S. helicopters had either been destroyed or immobilized about 1,500 meters (4,900 ft) southeast of the regiment's position. Scanlon was told to get his South Vietnamese counterpart, Captain Ly Tong Ba—commander of the 4th Mechanized Rifle Squadron, 2nd Armored Cavalry Regiment—to rescue the trapped South Vietnamese company and the helicopters.[33]
Ba asserted that he would not take orders from Americans. He also argued that sending the 13 M-113 armored personnel carriers through the Cong Ba Ky Canal would enable the Viet Cong to retreat because it might take too much time. An argument broke out between Vann and Ba. Finally, Vann radioed Ziegler at the command post at Tan Hiep and told him to ask the commander of the ARVN 7th Infantry Division to order Ba to move toward Ap Bac immediately. Shortly afterwards, Ziegler returned with Dam's permission, and Ba was ordered to move his M-113 carriers in the direction of the white smoke that were rising from the burning hamlet.[34] The American advisers were quietly confident that Ba's M-113s could turn the tide of battle; on previous occasions, Viet Cong fighters often fled from the battlefield as soon as M-113 armored personnel carriers turned up. However, in contrast to previous engagements, Viet Cong commander Hoang had ordered the soldiers of the 261st and 514th Battalions to throw everything they had at the South Vietnamese, as retreat through the muddy rice fields would result in certain death.[35]
The South Vietnamese M-113s had no problem crossing the streams and rivers typical of the Mekong Delta,[36] but the heavy 10-ton M-113s bogged down in the Cong Ba Ky Canal, forcing the crews and the infantry company on board to cut down brush and trees and fill the canal until it was shallow enough for the M-113s to cross.[37] The rescue operation was further delayed when Ba tried to obtain proper authorization to advance, because he was under orders not to take commands directly from the American advisers. Vann, who was flying above the armored formation, demanded that Ba advance immediately. Ba replied that he would not take instructions from Americans. When Vann threatened to have Ba shot, he reluctantly continued to advance, although very slowly, toward the entrenched Viet Cong.[38]
Meanwhile, a fourth CH-21 returned to Ap Bac to attempt to rescue the downed helicopter crews, and it too was heavily damaged by ground fire and forced to land on the muddy rice field. The Viet Cong had set a new record: the battle was the first time they had either destroyed or downed five helicopters within a few hours.[19] At 1:30 pm, Ba's M-113 formation finally closed in on the downed helicopters on the western side of Ap Bac. The M-113s approached the landing zone in single file instead of in formation, and they were immediately fired upon by Viet Cong inside the hamlet who were able to concentrate their fire on one target at a time. The South Vietnamese M-113 gun crews were exposed from the waist up, so they were easy targets for snipers; by the end of the day, fourteen South Vietnamese M-113 crewmen had been killed due to their exposure. The two leading M-113s were able to pull up beside the downed helicopters, but one driver was killed while driving with his head outside of the hatch, and Ba was knocked unconscious inside his carrier.[39]
Scanlon, with the help of Bowers, ran forward to aid the wounded men and carry them back to the M-113 formation. At that point, South Vietnamese M-113 crews backed off while firing their .50 caliber machine guns aimlessly into the sky.[38] When Ba recovered, his company launched a frontal assault on the Viet Cong's foxhole line. Just when the M-113 crews closed in on their objective, a Viet Cong squad leader and his men jumped out of their foxholes and tossed grenades at the lead formation of the attack force.[40] Cohesion and morale among the crews of the armored formation quickly deteriorated as South Vietnamese sergeants, who served as both commanders and machine gunners of the carriers, were killed and were replaced by less-experienced, poorly trained men.[41]
In a last ditch effort to overrun the Viet Cong's stronghold, an M-113 equipped with a flamethrower was sent forward to within 100 meters (330 ft) of the Viet Cong position to fire the western tree line. The flamethrower had a range of up to 200 meters (660 ft),[42] but when the operator fired the device, the flame died after only 30 meters (98 ft).[41] It was later discovered that the crew had mixed the incorrect amount of jelling agent with the gasoline. The final attack mounted by the M-113 company failed.[41] At around 2:30 pm, defeated and with their morale broken, the 4th Mechanized Rifle Squadron disengaged from the fight and withdrew. [41]
By that stage, Vann was frustrated by the Civil Guard soldiers of Task Force B, because they appeared to be in no hurry to reach Ap Bac, as they searched one house at a time while marching up from the south-western flank of the battlefield.[43] In his final effort to defeat the Viet Cong, Vann flew into Tan Hiep and asked Cao to deploy an airborne battalion on the eastern side of Ap Bac, the most logical retreat route for the Viet Cong. Vann hoped to trap the Viet Cong inside the hamlets by blocking their retreat routes on all sides, and annihilate them using an elite battalion of South Vietnamese paratroopers. To Vann's disappointment, Cao strongly opposed the idea and decided to drop one of his airborne battalions behind the M-113 formation on the western side instead.[44] Vann accused Cao of wanting to let the Viet Cong escape in order to avoid further South Vietnamese casualties. However, Cao argued that a surrounded and well-entrenched enemy would fight more fiercely than a retreating one, so he wanted the Viet Cong units inside the hamlets of Ap Bac and Ap Tan Thoi to expose themselves by retreating through the eastern side of the battlefield, where he could destroy them with artillery and airpower.[45] Cao had also lost confidence in Vann, because Cao felt Vann had placed the lives of many South Vietnamese soldiers at risk to save the lives of a handful of Americans.[45] Major-General Tran Thien Khiem, Chief of the ARVN Joint General Staff, was present during the argument. He did not object to Cao's plan because it was consistent with President Diem's objective to save Vietnamese lives through the Rural Revolutionary Development and Chieu Hoi Programs, which encouraged Viet Cong fighters to join the South Vietnamese military.[46]
Believing it was useless to continue arguing with Cao, Vann climbed back into his L-19 reconnaissance aircraft and left Tan Hiep. Throughout the afternoon, he continued to press Cao to quickly deploy the South Vietnamese paratroopers. He was fearful that the battle would turn out to be the largest defeat of South Vietnamese forces up to that point of the war. Cao promised to deploy the second Civil Guard battalion which had just arrived on the south-western flank of Ap Bac, and to drop the ARVN 8th Airborne Battalion at around 4:00 pm behind Ba's armored personnel carriers.[46] Late in the afternoon, a flight of C-123 Providers, with about 300 South Vietnamese paratroopers aboard, closed in on their objective and quickly drew machine gun fire from the hamlet. The C-123 pilots changed course to avoid the ground fire, but either the South Vietnamese jumpmaster or the American flight leader did not compensate for the change. As a result, the paratroopers landed right in front of the entrenched Viet Cong positions, instead of behind the 4th Mechanized Rifle Squadron and the Civil Guards.[47]
The Viet Cong were able to pick off one South Vietnamese paratrooper after another, some as they descended and others when their parachutes became stuck in the trees. Those paratroopers that reached the ground and survived tried to move forward, but the Viet Cong soldiers in defilade position fired on the paratroopers exposed in the open rice paddies. Undeterred, the ARVN 8th Airborne Battalion launched small-unit attacks, but on each occasion they were repelled, and sporadic fighting continued until sundown.[48] By the end of the day, the airborne battalion had lost 19 soldiers killed in action and another 33 wounded. American advisers Captain Fletcher Ware and Sergeant Russell Kopti, who had parachuted in with the South Vietnamese, were also wounded.[48] As night fell, Hoang knew that South Vietnamese forces were closing in from three directions. The eastern flank remained open, and he ordered both elements of the 261st and 514th Battalions, exhausted and low on ammunition, to assemble at the southern end of Ap Tan Thoi. They evacuated through the rice fields, taking their dead and wounded comrades.[49]
Vann wanted to use a C-47 flare plane to illuminate the rice fields on the eastern flank of Ap Bac and Ap Tan Thoi. He wanted to hit the Viet Cong with 500 rounds of artillery and destroy them as they retreated. Cao would not approve the use of flares because it could expose the airborne battalion's night defensive positions, and instead ordered 100 rounds of artillery to be fired at a rate of four shells per hour.[48] At 10:00 pm, Viet Cong commander Hoang led his two companies out of Ap Tan Thoi and headed for their base camp in the Plain of Reeds, while the local force units left by a different route for their hideouts in the local area.[50] The 1st Company, 261st Battalion, led the column, followed by litter carriers carrying the dead and wounded. The 1st Company, 514th Battalion, covered the tail of the formation, with one of their platoons acting as a rear guard. The wounded Viet Cong soldiers were transferred onto sampans at the canal on the eastern side of Ap Tan Thoi, while the rest of the formation marched on. At 7:00 am on January 3, Hoang's men successfully reached their destination without being detected.[51]
On January 3, a team of Western journalists toured the deserted Ap Bac hamlet with the American advisors. When reporter Neil Sheehan asked Brigadier-General Robert York what had happened, the general replied, "What the hell's it look like happened, boy. They got away, that's what happened".[52] Shortly afterward, more than eighteen hours too late, the South Vietnamese hit Ap Bac with an artillery barrage. The artillery rounds killed another five South Vietnamese soldiers and wounded fourteen others.[53] Vann, who had made key decisions during the early phases of the battle, blamed the South Vietnamese for the debacle. "It was a miserable damn performance, just like it always is. These people won't listen. They make the same mistake over and over again in the same way".[54] According to Moyar (2008), in blaming the South Vietnamese, Vann wanted to conceal the American's flawed intelligence and poor leadership. He hoped to pressure the South Vietnamese to accept future changes he favored.[55]
General Paul D. Harkins, commander of the Military Assistance Command, Vietnam (MACV), had a far more optimistic assessment of the battle. He considered the operation to be a major success: after the Viet Cong abandoned their positions, the South Vietnamese units captured the hamlets of Ap Bac and Ap Tan Thoi. Harkins' evaluation of the battle's success were based on U.S. military doctrine from World War II, in which two armies fought a conventional combined arms battle with the goal to control territory.[56] However, the Viet Cong were far more interested in exposing the weaknesses of Diem's regime and its military. Thus, Moyar (2008) argues that Harkins' optimistic and mis-directed doctrine negatively affected the long-term performance of the South Vietnamese military and the American advisers attached to them. He refused to acknowledge the flawed system under which the South Vietnamese commanders and their American counterparts operated. Because of his attitude, neither the South Vietnamese or the Americans learned important lessons from the battle.[57]
The South Vietnamese units that participated in the battle took heavy losses in their failed attempt to destroy the Viet Cong forces. South Vietnamese casualties included 83 killed in action and at least 100 wounded.[1] The American participants, who included advisors and aircrews, counted three dead and eight wounded. Of the fifteen American helicopters sent to support the operation, only one escaped undamaged, and five were either downed or destroyed.[1]
For the Viet Cong, the Battle of Ap Bac marked the first time they decided to stand and fight a large South Vietnamese formation, although outnumbered by more than five to one. Against overwhelming odds, the Viet Cong achieved their first major victory. They successfully stopped the well-equipped South Vietnamese army, supported by a combination of artillery and armored units as well as American airpower. The Viet Cong lost 18 soldiers killed and 39 wounded, although hit by more than 600 rounds of artillery, napalm and other ordnance released by 13 warplanes and five UH-1 gunships.[1]
Ap Bac had many as yet undefined consequences for the South Vietnamese government and the American involvement in Vietnam. The battle was a significant milestone for the Viet Cong as a fighting force. For individual Viet Cong soldiers, the battle proved that they could defeat the superior South Vietnamese forces, equipped with modern military hardware and significant support and funding from the United States.[58] Militarily, the morale and confidence of Viet Cong commanders and soldiers, who had experienced serious setbacks during the previous year, were significantly boosted. Politically, the Viet Cong 261st and 514th Battalions were able to exercise greater influence in their areas of operations because of the prestige of defeating the soldiers of Diem's unpopular regime.[1]
Despite the initial success of the Strategic Hamlet Program and the intensified military operations of 1962, the events at Ap Bac placed additional pressure on Diem's government because it showed it could not cope with the resurgence of the Viet Cong, particularly in the regions surrounding the Mekong River.[59]