The Army and other services use straight-line (or wand) flashlights in a number of different models. The most common is the MX-993/U made by Fulton, pictured left. It is issued in olive drab (Army) and gray
(Navy, USAF, USCG). It is a waterproof design with rubber seals top and bottom. Like the anglehead, it comes with lens filters and a spare PR-6 bulb in a compartment at the base. Length is 9 inches, diameter 2 1/4 inches. The light is powered by two "D" cell batteries. Nomenclature is "Flashlight, rough service, waterproof" model MX-993/U, Type I, Style 1, Subtype E, with switchguard. NSN 6230-00-270-5418.
Specification is MIL-F-3747.
These items were left by Americans in Vietnam after the war.