The G'rho Defense Force was the militia on the planet of G'rho. Its members included the Ilwizzt Major Brco, Lieutenant Jerriman, military historian Ydra Sibwarra, and pilots Trig and Seni. The militia included a number of Conjo fighters.

In 2 BBY, G'rho was raided by the Ssi-ruu. The Defense Force tried to hold back the attackers but were unsuccessful. Virtually all the planet's colonists were subsequently killed by the Ssi-ruu.