1st Battalion, 9th Marines
The 1st Battalion 9th Marines (1/9) was an infantry battalion of the United States Marine Corps. Formed during World War I, it served until the mid-2000s when it was deactivated to make room for one of three light armor reconnaissance battalions. During the Vietnam War, 1/9 sustained an especially high casualty rate, such that it received the nickname "The Walking Dead".
1/9 Insignia
Vietnam-era battalion insignia
Marines with 1st Battalion
A team of infantry Marines with 3rd Platoon, Charlie Company, 1st Battalion, 9th Marine Regiment, patrols across a field during a security patrol in Helmand province, Afghanistan, 21 February 2014.
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)–dominated A Shau and Song Đa Krông Valleys by the 9th Marine Regiment. Based on intelligence and captured documents, the PAVN unit in contact was believed to be the 9th Regiment.
Operation Dewey Canyon
A wounded Marine is helped to an evacuation point
Marine UH-1Es at Fire Base Cunningham during Operation Dewey Canyon