8 Jan 1966 – 14 Jan 1966
Area of Operation: Binh Duong Province, Hau Nghia Province, III Corps. Particularly the HoBo Woods, west of the Iron Triangle.
Allied Units: US Army 1/16th, 1/28th, and 2/28th Infantry of 3d Brigade 1st Infantry Division, 1/503rd and 2/503rd Airborne of 173rd Airborne Brigade; 1st Battalion Royal Australian Regiment (1RAR)
Allied Casualties: Unclear. An after action report from the 173rd Abn Bde cites “friendly losses” at 6 KIA and 45 WIA. These numbers likely do not take into consideration the casualties of 3d Bde 1st Inf Div, or 1RAR.
Enemy Units: Viet Cong 7th Cu Chi Battalion, D308 VC Company
Enemy Casualties: 107 KIA, 9 POW
Objective: Search and destroy, with particular focus on locating and destroying the headquarters of Viet Cong Military Region IV.
Significance/Notes: The Cu Chi Tunnels were discovered during Operation Crimp. This added a new dimension to the style of war being fought by the Communists, and necessitated a proper response from the US and its allies. Crimp was immediately followed by Operation Buckskin to clear the tunnels. (Note: Some sources combined the information from both operations.)
The Cu Chi Tunnels can be visited today.
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