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The Type-55 Anti-Infantry Stationary Gun, abbreviated as Type-55 ASG, is a Covenant anti-infantry gun turret and one of the emplacements generally identified as Shades. The Covenant remnants makes extensive use of the T-55 ASG and fielded the weapon during the first and second battles on Requiem in 2557 and 2558, respectively.
The T-55 Shade is the most recent addition in a long and diverse series of powerful, anti-infantry weapon emplacements. Shades are designed to repeatedly volley bolts of superheated plasma, a barrage easily capable of taking down enemy personnel and lightly armored vehicles.