What is the history of forward observers in the U.S. military?
The U.S. Army designated a specific officer position with code number 1189 to serve as a forward observer during World War II in 1942. This role required personnel to direct artillery fire from a forward position while observing shell bursts and adjusting fire by computation methods. The designation shifted over decades to reflect changing tactical needs, eventually becoming Military Occupational Specialty 13F for enlisted members and 13A for officers.