TC 3-22.90 governs U.S. Army mortar training, including mortar equipment, employment, fire control, operations, safety, and gunners examinations.
View TC 3-22.90 on armypubs.army.mil
TC 3-22.90 covers 60-mm, 81-mm, and 120-mm mortars, ammunition, indirect fire teams, firing methods, and mortar carrier systems. It requires preparation before gunners examinations and proper checks before mounting the 120-mm mortar.
Applies to: Active Army, Army National Guard, and United States Army Reserve.
The team consists of a forward observer (FO), a fire direction center (FDC), and the mortar squad. (paragraph 1-5)
Prior to a fire mission, the mortar squad ensures that the pointing device is functioning and that the mortar is boresighted properly. (paragraph 6-49)
A Soldier must be proficient in mechanical training, squad drill, and fire commands and their execution before being qualified to take the examination. (paragraph 8-5)
Each unit armed with a mortar weapon system gives examinations semiannually. (paragraph 8-8)
When not in use, store the sight unit in its carrying case. (paragraph 2-2)