| Operation Jackstay | |||||||
|---|---|---|---|---|---|---|---|
| Part of the Vietnam War | |||||||
 US Marines prepare for an amphibious assault during Operation Jackstay | |||||||
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| Belligerents | |||||||
 United States South Vietnam |
 Viet Cong | ||||||
| Commanders and leaders | |||||||
|
Captain John D. Westervelt Colonel J. R. Burnett |
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| Units involved | |||||||
|
1st Battalion, 5th Marines 2 Marine battalions |
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| Casualties and losses | |||||||
|
5 killed | US body count: 63 killed | ||||||
Operation Jackstay was a joint U.S. Marine Corps, U.S. Navy, U.S. Coast Guard and Republic of Vietnam Marine Division operation in the Rung Sat Special Zone, South Vietnam that took place from 26 March to 6 April 1966.