| Ninth Army | |
|---|---|
&sq=Qlik&lang=&file=File:US_Ninth_Army_patch.svg) Ninth Army shoulder sleeve insignia | |
| Active | 15 April 1944–1945 2012–2020 |
| Country |  United States |
| Branch |  United States Army |
| Type | Field army |
| Engagements | World War II |
| Commanders | |
| Notable commanders | GEN William Hood Simpson |
The Ninth Army was a field army of the United States Army, most recently garrisoned at Caserma Ederle, Vicenza, Italy. It was the United States Army Service Component Command of United States Africa Command (USAFRICOM or AFRICOM).
Activated just eight weeks before the June 1944 Normandy landings, the Ninth Army was one of the main U.S. Army combat commands used during the campaign in Northwest Europe in 1944 and 1945. It was commanded at its inception by Lieutenant General William Simpson. It had been designated Eighth Army, but on arrival in the United Kingdom it was renamed to avoid confusion with the famous British formation of the same designation, taking the name of a unit of the fictitious First United States Army Group prepared for Operation Quicksilver. All American field armies in the European Theatre of Operation were designated with odd numbers; even numbered field armies served in the Pacific Theatre of Operations.