United States Army Logistical Commands were created after the end of World War II and would serve into the US Army's Pentomic Era, specifically from the post World War II Era through the post Korean War era to support the Regimental Combat Teams. The command's main emphasis was the operation of depots and ports. They supported the various units in their assigned region with supply and transportation of supplies from port embarkation areas to the front line troop units. There were 28 Logistical Commands, 8 serving active duty mainly in the Pacific and Europe and 20 serving Reserve and National Guard units.