What characterizes a gun in military contexts?

A gun in military contexts is characterized primarily as a direct fire support weapon. This means that it is designed to deliver rounds directly towards a target from a short distance, enabling troops to provide immediate support in combat scenarios. Typically, guns are used to engage enemy personnel or vehicles in a straightforward and effective manner, allowing for a rapid response to threats on the battlefield.

The emphasis on direct fire denotes that the weapon system does not rely on guidance systems or intricate targeting mechanisms, which is a key distinction from guided weapon systems. Additionally, while guns can sometimes be used in conjunction with explosive projectiles, their primary function is not solely about destruction of structures but rather to engage in direct combat. Lastly, guns are not designed for underwater engagement; their operational environment is primarily land or air-based.