In June 1942, under the command of Lieutenant Colonel Edson Duncan Raff, the 2nd Battalion, 503rd PIR was detached from the 503rd PIR and sailed to Scotland, becoming the first American parachute unit to go overseas in World War II. It was attached to the British 1st Airborne Division for training, which included mass tactical jumps from C-47 aircraft at 350 feet, extensive night training, and speed marching for 10 miles to and from the training area daily; and on one occasion, marching 32 miles in 11 hours. In summer 1942, Allied forces were completing the task of planning Operation Torch, the invasion of North Africa, with the 2nd Battalion, 503rd PIR scheduled to take the lead and make the first combat jump.