In defense, interlocking fields of fire are used to:

• A. Provide overlapping fields of fire to prevent gaps
• B. Require multiple disjoint sectors
• C. Focus fire on a single point only
• D. Minimize the number of firing positions

Answer: (A)

Interlocking fields of fire are arranged so the arcs of fire from adjacent weapons overlap, giving continuous coverage along likely avenues of approach. This overlap provides mutual support and redundancy: if one position is suppressed or knocked out, the neighboring positions still cover the area, preventing gaps an enemy could exploit. It also makes it harder for an attacker to advance unseen, since any approach comes under fire from multiple directions. This approach prioritizes overlapping coverage over disjoint sectors or concentrating fire on a single point, and it values maintaining full frontage protection rather than minimizing the number of firing positions.