Part of the Vietnam War (1969)
 | This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Operation Oklahoma Hills" – news · newspapers · books · scholar · JSTOR (March 2018) (Learn how and when to remove this message) |
| Operation Oklahoma Hills | |||||||
|---|---|---|---|---|---|---|---|
| Part of Vietnam War | |||||||
.jpg) Marines search for enemy supply caches during Operation Oklahoma Hills | |||||||
| |||||||
| Belligerents | |||||||
 United States South Vietnam |
 North Vietnam | ||||||
| Commanders and leaders | |||||||
|
MG Ormond R. Simpson Col. Robert L. Nichols |
| ||||||
| Units involved | |||||||
|
3rd Battalion, 1st Marines 7th Marine Regiment 3rd Battalion, 26th Marines 51st Regiment |
31st Regiment 141st Regiment | ||||||
| Casualties and losses | |||||||
|
44 killed | US body count: 589 killed | ||||||
Operation Oklahoma Hills was a clear and search operation during the Vietnam War mounted by the 1st Marine Division and the Army of the Republic of Vietnam (ARVN) 51st Regiment from 31 March to 29 May 1969.