What is referred to as 'dead space' in relation to machinegun fire?

The term 'dead space' in relation to machine gun fire refers to the area where the target drops below the line of aim. This is a critical concept in machine gun employment because it highlights zones that cannot be engaged effectively due to their position in relation to the line of sight or trajectory of the bullets. For instance, if a target moves into a low area or behind cover that the machine gun cannot reach directly, it becomes 'dead space.'

Understanding this concept is essential for effective tactics and positioning during combat operations, as it influences how a gunner and their team will plan their approach to target engagement. Proper knowledge of dead space allows for better coordination with maneuvering units and helps avoid engagement failures due to terrain and positioning challenges.