| Operation Fulton Square | |||||
|---|---|---|---|---|---|
| Part of the Vietnam War | |||||
| |||||
| Belligerents | |||||
 United States South Vietnam |
 North Vietnam | ||||
| Commanders and leaders | |||||
| Melvin Zais |
| ||||
| Units involved | |||||
|
1st Brigade, 5th Infantry Division (Mechanized) 101st Airborne Division 1st Infantry Division | 27th Regiment | ||||
| Casualties and losses | |||||
| 28 killed | US body count: 384 killed | ||||
Operation Fulton Square was a joint U.S. Army and Army of the Republic of Vietnam (ARVN) military operation during the Vietnam War to engage People's Army of Vietnam (PAVN) units in the lowlands of Quảng Trị Province.