Operation Dewey Canyon was the last major offensive by the 3rd Marine Division during the Vietnam War. It took place from 22 January through 18 March 1969 and involved a sweep of the People’s Army of Vietnam (PAVN)âdominated A Shau and Song Äa Krông Valleys by the 9th Marine Regiment commanded by Colonel Robert H. Barrow, and supporting artillery were lifted from Quang Tri. By 18 March the enemyâs base area had been cleared out, 1617 enemy dead had been counted, and more than 500 tons of weapons and ammunition unearthed.
rochestermilitary.com
