XX Corps (German Empire), a unit of the Imperial German Army prior to and during World War I
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Armoured cavalry elements of the United States XX Corps, while on a reconnaissance operation in the direction of the Moselle, made contact with elements from the 17th SS Panzergrenadier Division on 6 September 1944.
During that latter campaign, XX Corps became part of Maj. Gen. Henry Warner Slocum’s Army of Georgia.
By mid November 1949, one of the communist attacks on the nationalist XIV Corps and XX Corps had succeeded in breaching the nationalist defense on both flanks, resulting in Youyang (酉阳), Xiushan and Enshi falling into the enemy hands.
At a meeting on 29 March with Sir John French the commander of the British Expeditionary Force (BEF) and Herbert Kitchener the Secretary of State for War, it was agreed that the IX and XX corps would be relieved at Ypres by British units and on 1 April, French agreed to attack at the same time as the Tenth Army.