What type of round is the M853/A1?

The M853/A1 is classified as an illumination round, specifically designed to produce a bright light or flare effect when it is fired. These rounds are used to illuminate terrain during night operations, enhancing visibility for ground troops and aiding in target identification and reconnaissance.

Unlike high explosive rounds, which are primarily designed for destructive capabilities, illumination rounds serve a different tactical purpose focused on providing visibility rather than inflicting damage. This distinguishes them from training rounds, which typically simulate the performance of operational rounds but are not intended for real combat scenarios. Additionally, smoke rounds would be used for obscuration rather than illumination. Therefore, identifying the M853/A1 accurately as an illumination round highlights its specific function on the battlefield, providing critical support during nighttime operations.