The G'rho Defense Force served as the planetary militia for G'rho (a planet). Notable individuals within its ranks were Brco, an Ilwizzt holding the rank of Major, Lieutenant Jerriman, Ydra Sibwarra who was a military historian, and the pilots Trig and Seni. This militia also incorporated several Conjo fighters.
During 2 BBY, the Ssi-ruu launched a raid on G'rho. Despite their efforts to defend against the invaders, the Defense Force was defeated. Following this, nearly all of the planet's inhabitants were exterminated by the Ssi-ruu.