What is the most commonly used 81mm mortar in the U.S. Army?

The M252 mortar is the most commonly used 81mm mortar in the U.S. Army due to its versatility and effectiveness for infantry support. It is a smoothbore, muzzle-loaded mortar that provides indirect fire capabilities, which are essential for modern combat operations. The M252 can fire various types of ammunition, including high-explosive, illumination, and smoke rounds, allowing it to effectively engage a range of targets on the battlefield.

Additionally, the design of the M252 allows for easy transportation and deployment by a crew of soldiers, which enhances its usability in various operational scenarios. Its compatibility with existing 81mm ammunition stocks also makes it a practical choice for integrating into diverse units across the Army.

Other mortars like the M224 and M320 serve different roles or are used in different configurations that may not have the same level of ubiquity in combat scenarios as the M252. The M119, while an effective artillery piece, is classified as a howitzer rather than a mortar, further solidifying the M252's distinction as the primary choice for 81mm mortar applications in the U.S. Army.