After the fall of the Galactic Empire, the Imperial military force disbanded and many troopers became remnants who continue to serve under former high-ranking Imperial officers.
In the season finale of THE MANDALORIAN, the Mandalorian bounty hunter along with the Child (a.k.a. Baby Yoda) and his allies were trapped in a cantina by the leader of an Imperial Remnant, Moff Gideon. In an effort to flush them out from the structure, Gideon sent in the Incinerator Stormtrooper, a specialized trooper trained in utilizing incendiary weaponry to do the job.
Armed with a powerful flamethrower, the Incinerator Stormtrooper mercilessly sets the cantina ablaze. Then, trooper entered the burning building to seal their fates. Just as the bounty hunter and his allies thought they were about to meet their maker, the Child’s mystical gift prevented the flames from engulfing them. Fighting fire with fire, the Child used the Force to redirect the red-hot blaze back at the trooper which then combusted into flame, resulting in the explosion of the flamethrower fuel tank that sent the trooper flying out of the building.