What is a common use of tracer rounds in machine gun fire?

The primary use of tracer rounds in machine gun fire is to observe the impact of rounds and adjust the point of aim effectively. Tracers contain a pyrotechnic composition that causes them to emit a visible trail when fired, which allows the gunner and observers to see where the rounds are landing in relation to the intended target. This visual feedback is crucial during engagements, as it helps in making necessary adjustments to improve accuracy without needing excessive recalls on target or time spent reassessing the situation.

This capability is especially valuable in dynamic combat scenarios where quick adjustments can make a significant difference in effectiveness. By seeing the trajectory and impact of the tracers, gunners can elevate, depress, or alter their lead based on the observed results, thus enhancing overall fire control and efficiency on the battlefield.

While tracer rounds may also serve to indicate the direction of fire or create confusion among the enemy, these are secondary effects that do not provide the same level of operational advantage as the ability to observe fire impact and make precise adjustments.