European Theater of Operations United States Army

European Theater Of Operations United States Army

The European Theater of Operations, United States Army (ETOUSA) was a United States Army formation which directed U.S. Army operations in parts of Europe from 1942 to 1945. It referred to Army Ground Forces, United States Army Air Forces, and Army Service Forces operations north of Italy and the Mediterranean coast, in the European Theatre of World War II. It was bordered to the south by the North African Theater of Operations, US Army (NATOUSA), which later became the Mediterranean Theater of Operations (MTOUSA).

The term "theater of operations" was defined in the U.S. Army field manuals as "the land and sea areas to be invaded or defended, including areas necessary for administrative activities incident to the military operations". In accordance with the experience of World War I, it was usually conceived of as a large land mass over which continuous operations would take place and was divided into two chief areas-the combat zone, or the area of active fighting, and the Communications Zone, or area required for administration of the theater. As the armies advanced, both these zones and the areas into which they were divided would shift forward to new geographic areas of control.

The "European Theater of Operations, United States Army," as a military command, should not be confused with the European Theatre of World War II which is often defined to include the years before the US entered the war, the Italian campaign, the European Strategic Bombing Campaign, the European Eastern Front, all of the European Western Front in 1944 and 1945, as well and other actions which did not involve the use of American forces.