Portal:World War II/Selected battle/15
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The Battle of the Tenaru (or Battle of the Ilu River) took place August 21, 1942, on the island of Guadalcanal, and was a land battle of the Pacific campaign of World War II, between Imperial Japanese Army and Allied (mainly United States (U.S.) Marine) ground forces. The battle was the first major Japanese land offensive during the Guadalcanal campaign.In the battle, U.S. Marines, under the overall command of U.S. Major General Alexander Vandegrift, successfully repulsed an assault by the "First Element" of the "Ichiki" Regiment, under the command of Japanese Colonel Kiyonao Ichiki. The Marines were defending the Lunga perimeter, which guarded Henderson Field, which was captured by the Allies in landings on Guadalcanal on August 7. Ichiki's unit was sent to Guadalcanal in response to the Allied landings with the mission of recapturing the airfield and driving the Allied forces off of the island. Underestimating the strength of Allied forces on Guadalcanal, which at that time numbered about 11,000 personnel, Ichiki's unit conducted a nighttime frontal assault on Marine positions at Alligator Creek on the east side of the Lunga perimeter. Ichiki's assault was defeated with heavy losses for the Japanese attackers. .