By 1941, soldiers wore a wool flannel shirt and wool serge trousers in winter and a cotton khaki shirt and trousers in summer, both with ankle length russet leather service shoes and OD canvas leggings, and often with the OD cotton M-1941 Field Jacket. A blue denim fatigue uniform was gradually being replaced by a M1941 green HBT uniform; both were in two pieces. Armored units still were using wool riding breeches and wore high-lacing boots in some cases, and the Paratroopers were stuck with a general issue HBT overalls with no real suitable footwear.