What does MRL mean in Military?

Multiple rocket launcher

A multiple rocket launcher (MRL) or multiple launch rocket system (MLRS) is a type of rocket artillery system. Rockets have different capabilities than artillery, like longer range and different payloads, typically considerably larger warheads than a similarly sized artillery platform or multiple warheads. Unguided rocket artillery is notoriously inaccurate and slow to reload compared to artillery. To overcome this rockets are combined in systems that can launch multiple rockets simultaneously. Modern rockets can use GPS or inertial guidance to combine the advantages of rockets with high accuracy.

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