MacArthur decided to counterattack with an amphibious invasion at Inchon in November. The invasion force, consisting of the 1st Marine Division and the 7th Infantry Division (United States), was originally named "X Force" and was placed under the command of General Almond. Because the name X Force was confusing to logistics officers, upon Almond's suggestion, the formation was re-designated as X Corps. MacArthur split X Corps from the 8th Army, then placed Almond, who had no experience with amphibious operations, in command of the main landing force just before the landings.