IV Corps (United States)

IV Corps

Shoulder sleeve insignia
Active 1918–19
1939–45
1958–68
Country  United States
Branch  United States Army
Size Corps
Engagements

World War I

World War II

Commanders
Notable
commanders
Alexander Patch
Willis D. Crittenberger
U.S. Corps (1939 - Present)
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III Corps (United States) V Corps (United States)

IV Corps was a corps-sized formation of the United States Army that saw service in both World War I and World War II.

World War I

The corps was first organized on 20 June 1918, during World War I as part of the American Expeditionary Forces serving on the Western Front, as Headquarters IV Army Corps. It participated in the offensives of St. Mihiel and Lorraine, being demobilized in Weimar Republic, 11 May 1919.[1]

World War II

Formerly reactivated without interruptions since October 1939, during World War II IV Corps was reconstituted on 27 June 1944,[2] replacing the VI Corps in the U.S. Fifth Army's order of battle in the Italian campaign, after Allied forces liberated Rome in the summer of 1944 when VI Corps was withdrawn to take part in Operation Dragoon, the Allied invasion of southern France. Initially the corps had two divisions - the U.S. 1st Armored and 6th South African Armoured - but was reinforced with U.S. 92nd Infantry Division from August, 1st Brazilian Infantry Division from September, and U.S. 10th Mountain Division in February 1945, as well as with U.S. 85th Infantry Division in April.[3]

Under command of Major General Willis D. Crittenberger the corps took part in the fighting through the summer of 1944 as the Fifth Army, under Lieutenant General Mark Clark, and the British Eighth Army, under Lieutenant-General Oliver Leese, advanced north to the River Arno. In the autumn and winter of 1944 IV Corps formed the central wing of the Fifth Army's sector, taking the major role in the Fifth Army's assault on the Gothic Line in the central Apennine Mountains fighting to break through to the Lombardy plains beyond.[4][5][6]

In the spring of 1945 the corps, still the Fifth Army's central sector, took part in the successful Italian spring offensive breaking out of the Apennines to outflank the units of the German Tenth and Fourteenth Armies defending Bologna forming a pincer with the Eighth Army on the right to surround them, and then driving on to the River Po and finally Verona and Brescia.

The corps was inactivated on 13 October 1945, at Camp Kilmer, New Jersey, it was reactivated again at Birmingham, Alabama, in 1958 and inactivated at Birmingham in 1968.[7]

Bibliography

Notes

  1. Wilson, 1999. Page 55.
  2. Wilson, 1999. Pages 55-56
  3. Clark, 2007 (1950).
  4. Clark, 2007 (1950).
  5. Moraes, 1966.
  6. Crittenberger, 1952.
  7. Ibidem Wilson, 1999.
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