What is the primary difference between direct fire and indirect fire missions?

• A. Only equipment used varies
• B. Direct fire uses trajectory calculations; indirect fire does not
• C. Direct fire involves aiming directly while indirect fire uses trajectory calculations
• D. The target's location determines the method of fire

Answer: (C)

Direct fire is characterized by shooting at a target that can be seen directly by the shooter, which means the aiming is done straight at the target without the need for complex calculations. The shooter aligns their weapon directly with the target and fires, resulting in immediate effect on the target.

In contrast, indirect fire involves targeting that cannot be seen directly by the shooter. Instead, it utilizes trajectory calculations to account for various factors like distance, wind, and elevation. This type of fire relies on mathematics to predict where the rounds will land, with the use of spotting or forward observers often necessary to adjust fire based on the observed impact relative to the target.

Thus, the essential distinction lies in the method of aiming and targeting: direct fire relies on a line of sight to the target, while indirect fire requires calculating the trajectory to hit a target not visible to the shooter.