1st Battalion, 21st Field Artillery Regiment (United States)
| 1st Battalion, 21st Field Artillery Regiment | |
|---|---|
21st Field Artillery Regiment Coat of Arms | |
| Active | 1916–1921; 1923–1946, 1948–1957, 1960–1979, 1986–2014 |
| Country | United States |
| Branch | U.S. Army |
| Type | Artillery |
| Role | Fire support |
| Size | Battalion |
| Garrison/HQ | Fort Hood |
| Nickname(s) | "First Strike" |
| Engagements | World War I, World War II Vietnam War, Desert Storm, Iraqi Freedom, Enduring Freedom |
| Insignia | |
| 21st FAR Distinctive unit insignia | |
The 1st Battalion, 21st Field Artillery was a field artillery battalion of the United States Army based in Fort Hood, Texas. It was a subordinate unit of the 41st Fires Brigade (United States).