Operation Idaho Canyon

Operation Idaho Canyon
Part of Vietnam War
3d Bn 3d Marines Idaho Canyon.jpg
3/3 Marines cross a stream near Mutter's Ridge
Date21 July – 25 September 1969
ResultU.S. claims operational success
Flag of the United States.svg United StatesVietnam North Vietnam
Commanders and leaders
MG William K. Jones
Col. Wilbur F. Simlik
1st Battalion, 3rd Marines
2nd Battalion, 3rd Marines
3rd Battalion, 3rd Marines
Company I, 3rd Battalion, 4th Marines
1st Battalion, 11th Infantry Regiment
Company C, 1st Battalion, 77th Armored Regiment
9th Regiment, 304th Division
Casualties and losses
US body count: 563 killed
201 weapons recovered

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).[1]:141[2]

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