The Imperial Thermal Detonator Trooper, also known as a Grenade Trooper, was an artillery unit used by the Galactic Empire. The trooper used a mortar-like device to lob thermal detonators into the desired attack area. These units were very effective against shielded and mechanized units, but ineffective against buildings and non-mechs. They wore black uniforms with a helmet. Grenade Troopers were deployed on many battlefields during the Galactic Civil War.