Stormtrooper Commander

Stormtrooper Commanders are military officers within the Stormtrooper Corps of the Galactic Empire. Although Stormtroopers are regarded as the Empire's best soldiers, the commanders are trained to be far superior to the more common infantry soldier. Their exceptional reputation affords them command over most regular troopers regardless of rank. Highly intelligent and resolved to secure victory at any cost, the commanders are among the Empire's finest and most elite soldiers. Much like the ARC troopers of the Galactic Republic, the commanders are an elite within the elite.

Stormtrooper Commanders patrol hostile battlefields, leading Imperial forces into fierce combat on dangerous worlds that resist the rule of the Galactic Empire. In combat, the Stormtrooper Commanders lead by example by fighting alongside their troops on the frontlines. The most important aspect of the commanders is their freedom from the restrictive hierarchical system of the Imperial Military, which enables the commanders to call in for reinforcements or trigger ambushes without clearance from Imperial High Command.

=Equipment= Whereas the majority of soldiers within the Stormtrooper Corps are required to conform with Imperial uniformity by wearing stark-white battle armor, the Stormtrooper Commanders are aesthetically distinguished from their regular comrades by the blue markings that adorn their specialized armor. Although the commanders' protective covering is visually identical to the standard armor issued to all Stormtroopers, there are certain differences besides color that separate their gear from those of the usual rank-and-file trooper. The most notable feature in their armor is a built-in shield generator. The shield on the armor of the stormtrooper commanders is capable of withstanding a variety of attacks.

As befitting of their station, the commanders are armed with deadly hand-held blaster rifles, like the DLT-20A Blaster Rifle or EE-3 Carbine Rifle. =Sources=
 * Wookieepedia