The HARP-51 was adopted by the Republic Liberation Forces during the RLF/Imperial War and became ubiquitous by the war's end, and even through the creation of and reorganization of the PGAF. As such it is the longest-serving piece of military equipment in the PGAF, and due to its reliability and all-around usefulness, was highly regarded by most in the service soon after its introduction. First employed by RLF scouts and commandos conducting orbital drops, it became integral to most irregular operations conducted by the guerrilla forces, especially as they moved towards military actions on Coruscant. The HARP-51 was widely used and administered through the early years of the PGAF. It was integrated into the standard armor of the PGAF AIR commandoes, but it was not until the second invasion