| Operation McLain | |||||||
|---|---|---|---|---|---|---|---|
| Part of Vietnam War | |||||||
| |||||||
| Belligerents | |||||||
 United States South Vietnam |
 Viet Cong | ||||||
| Commanders and leaders | |||||||
|
John R. D. Cleland Nguyen Ba Thinh |
| ||||||
| Units involved | |||||||
|
3rd Battalion, 506th Infantry Regiment 44th Regiment |
482nd Local Force Battalion 840th Main Force Battalion | ||||||
| Casualties and losses | |||||||
|
69 killed |
US body count 1,042 killed 333 individual and 40 crew-served weapons recovered | ||||||
Operation McLain (also known as Operation Dan Thang) was a security operation conducted during the Vietnam War by the U.S. Army’s 3rd Battalion, 506th Infantry Regiment, 101st Airborne Division and the Army of the Republic of Vietnam (ARVN) 44th Regiment, 23rd Division in Bình Thuận Province, South Vietnam from 20 January 1968 to 31 January 1969.