Which of the following is NOT one of the main types of ammunition used in military applications?

The identification of hand grenades as not being one of the main types of ammunition used in military applications is accurate. In military terminology, hand grenades are typically classified as individual types of explosive devices rather than conventional ammunition. They are considered a category of ordinance designed for throwing by hand and are often used for close combat or support roles.

In contrast, small caliber ammunition, artillery shells, and missiles are classified as primary types of military ammunition. Small caliber ammunition encompasses bullets and cartridges used in firearms, while artillery shells are designed for larger caliber weapons like cannons and howitzers. Missiles represent a more advanced category of ammunition that includes guided and unguided projectiles designed for various targets over longer ranges. Each of these types plays a significant role in military operations, making them core components of military munitions.