"Plotting for Mortars: Marine Corporals S. L. Hinson (El Paso, Texas) and J. R. Buchanum (Tallahassee, Florida) are making calculations that will enable them to give exact grid coordinates to other Leathernecks in the 81mm mortar section of 2d Battalion, 1st Marines [2/1]. The Leathernecks of 81s are firing in support of allied forces on Operation Pipestone Canyon, a multi-battalion operation 12 miles south of Da Nang aimed at opening the final portions of Route 4, while at the same time clearing enemy forces from the Dodge City-Go Noi Island areas. Both areas have been the scene of fierce fighting during operations in the past (official USMC photo by Sergeant D. E. Kramer)."

From the Jonathan Abel Collection (COLL/3611), Marine Corps Archives & Special Collections.