Operation Union II

Operation Union II
Part of Vietnam War
3/5 Marines deploy from an HMM-361 helicopter during Operation Union II
Date 26 May – 5 June 1967 Location Quế Sơn Valley, Quảng Nam and Quang Tin provinces, South Vietnam Result U.S./South Vietnamese claim victory
Belligerents
United States  South Vietnam (withdrew May 30)	North Vietnam
Commanders and leaders
Colonel Kenneth J. Houghton	Unknown
Units involved
5th Marine Regiment 6th Regiment 1st Ranger Group	2nd Division
Casualties and losses
110 killed[1]	US body count: 701 killed 23 captured

Operation Union II was a search and destroy mission in the Quế Sơn Valley carried out by the 5th Marine Regiment. Launched on 26 May 1967 the operation ended on 5 June. U.S. reported the People's Army of Vietnam (PAVN) lost 701 killed and 23 captured, while U.S. casualties were 110 killed and 241 wounded.