What are the classes of fire with respect to ground?

• A. GRAZING AND PLUNGING
• B. Frontal and flank
• C. Oblique and enfilade
• D. Grazing and oblique

Answer: (A)

The main idea here is how the projectile’s path relates to the ground surface. There are two classes of fire by ground relation: grazing fire and plunging fire. Grazing fire means the bullets travel at a very low height, staying close to the ground across the target area so the ground itself stays in the line of fire. This creates a continuous low arc that sweeps along the surface and is ideal for denying ground along a frontage. Plunging fire is the opposite: a high-angle trajectory that rises and then comes down steeply, striking the ground farther away or over a crest, often hitting targets behind cover.

The other options describe directions or orientations of fire (frontal, flank; oblique, enfilade) rather than how the bullet path sits relative to the ground, so they don’t fit the question as well.