 The 1st Infantry Division Support Command ( DISCOM ) traces its origins to World War I , where in 1917 , the Division Trains were formed to support the newly formed 1st Infantry Division . In 1921 , the Division trains were consolidated into the Special Troops , 1st Infantry Division . After World War I , the Special Troops deployed to Fort Riley , Kansas . Three of the DISCOM 's former subordinate battalions , the 101st Forward Support Battalion ( FSB ) and 201st Forward Support Battalions , and the 701st Main Support Battalion , served in World War I , but with different divisions . 
