22 January 1969

Operation Dewey Canyon, perhaps the most successful high-mobility regimental-size action of the Vietnam War, began in the A Shaun/Da Krong Valleys when the 9th Marines, commanded by Colonel Robert H. Barrow, and supporting artillery were lifted from Quang Tri. By 18 March the enemy's base area had been cleared out, 1617 enemy dead had been counted, and more than 500 tons of weapons and ammunition unearthed.