Tet Offensive and aftermath
Easter Offensive (1972)
Post-Paris Peace Accords (1973–1974)
Operation Idaho Canyon was a United States Marine Corps operation in north-central Quảng Trị Province, South Vietnam from 21 July to 25 September 1969.
The operation was essentially a continuation of Operation Virginia Ridge - highly mobile company sized patrol and ambush operations across the operational area. 1st Battalion, 3rd Marines conducted "Denial Stingray" squad size multi-day patrols around Mutter's Ridge, 2nd Battalion, 3rd Marines conducted search and destroy operations north of The Rockpile, while 3rd Battalion, 3rd Marines conducted operated along Route 561 west of Charlie-2 (16°51′18″N 107°00′18″E / 16°51′18″N 107°00′18″E / 16.855; 107.005).