After the Korean War began, the perceived threat to Europe grew. In early 1951, NATO established Allied Command Europe. General Dwight D. Eisenhower was called from retirement to become the first Supreme Allied Commander Europe. The United States sent massive reinforcements to Europe to deter the Soviet Union. From 1950 to 1953 United States military personnel in Europe grew from 120,000 to over 400,000. United States Air Forces in Europe grew from three groups with 35,000 personnel to eleven wings with 136,000 personnel. Sixth Fleet in the Mediterranean doubled to more than 40 warships. United States Army, Europe, grew from one infantry division and three constabulary regiments to two corps with five divisions (including two mobilized National Guard divisions) and in November 1950 activated a new field army, Seventh Army, at Patch Barracks, Stuttgart. The Army activated the 10th Special Forces Group at Fort Bragg in 1952 and deployed it to Bad Tölz in November 1953 for unconventional warfare missions in the Soviet Bloc countries. To provide for national command within NATO and to help control this build-up of forces, Gen. Eisenhower proposed a separate command for all United States forces in Europe. Because the senior United States commander would continue as Supreme Allied Commander Europe, Eisenhower recommended giving "a maximum of delegated authority" to a four-star deputy.