Part of the Vietnam War (1969–1971)
| Operation Iron Mountain | |||||||
|---|---|---|---|---|---|---|---|
| Part of the Vietnam War | |||||||
| |||||||
| Belligerents | |||||||
 United States |
 North Vietnam Viet Cong | ||||||
| Units involved | |||||||
| 11th Light Infantry Brigade |
21st Regiment 403rd Sapper Battalion 40th Sapper Battalion 38th Local Force Battalion | ||||||
| Casualties and losses | |||||||
| 440 killed |
US body count: 4,589 killed 137 captured | ||||||
Operation Iron Mountain was a security operation during the Vietnam War in Quảng Ngãi Province, that took place from 28 February 1969 to 28 February 1971.