Operation DEWEY CANYON Begins

From January 22 to March 19, the U.S. 9th Marine Regiment conducts Operation DEWEY CANYON. Its objective is to eliminate a North Vietnamese buildup in the Da Krong Valley, an enemy supply route between the Laotian border and the A Shau Valley. Over the course of two months, Marine infantry units, transported and supported by helicopters, operate in the two valleys constructing fire bases and clearing out North Vietnamese troops. The operation accounts for numerous enemy casualties and the capture or destruction of thousands of tons of enemy arms, ammunition, and supplies.¹