Imperial Navy Trooper

Imperial Navy Troopers are soldiers in the Galactic Empire who are assigned by the Imperial Navy as part of Imperial Fleet Regiments to serve as guards and soldiers onboard its many starships and other installations. Navy troopers back up Stormtroopers and were created to provide the Imperial Navy a corps of troops separate from the Imperial Army and the Stormtrooper Corps for protection of their ships. After the initial boarding operations are conducted by Stormtroopers, Imperial Navy troopers often move in to conduct mop-up actions.

Besides serving the Empire as soldiers and security guards, they handle hangar control traffic, monitor sensor arrays, and perform various other duties. Their primary weapon is either a DH-17 Blaster Pistol or an E-11 Blaster Rifle.

Imperial Navy troopers are often considered something of a joke, as such soldiers are rarely ever expected to enter into combat engagements, however they are both well-equipped and adequately trained for their tasks. Some do see combat but tend to lack the edge that blooded troops get from their engagements. Vessels and installations that are located in more remote regions tend to rely more on their Navy troopers. In some cases, the Navy soldiers have gained enough experience to be a credible threat to their enemies. =Sources=
 * Wookieepedia