The BT1A1 "Sentinel" is a main battle tank designed by Raythium Technoligies in 1983 and manufactured by General Engineering and Herald Heavy industries. The Tank was operated by the nation of Etmerga and it was deployed in many conflicts around the world. The BT1A1 was used by many nations because of the lend-lease program by the Western Meritia Defense Treaty(WMDT) and Etmergan President Gavarro.

The Sentinel became well known because of the 1990 Ukabergi insurgency in Seravajo and Cherneko. 155 BT1A1s were sent to the Seravajo military in order to replace the tanks destroyed and captured by the Ukabergi National Liberation Army. The Sentinel was also given the nickname of the "armored dwarf" because of it's small height compared to other tanks. The BT1A1 had many systems that were way ahead of it's time. It had a advance Targeting system, advance computerized operation of the turret, Adjustable Hydraulic Suspension, and compatability for future technoligies.

Armaments:
1 - 150mm Cannon
1 - Machinegun