All Terrain, also referred to as AT-series, or the AT-series walker family, vehicles were a series of walkers made by Kuat Drive Yards, its subsidiaries Rothana Heavy Engineering, and Kuat Systems Engineering, and was most widely used by the Galactic Republic and the Galactic Empire.
- All Terrain Armored Transport (AT-AT)
- All Terrain Tactical Enforcer (AT-TE)
- All Terrain Open Transport (AT-OT)
- All Terrain Recon Transport (AT-RT)
- All Terrain Personal Transport (AT-PT)
- All Terrain Experimental Transport (AT-XT)
- All Terrain Advance Raider (AT-AR)
- All Terrain Defense Pod (AT-DP)
- All Terrain Heavy Enforcer (AT-HE)
- All Terrain Scout Transport (AT-ST)
- All Terrain Missile Platform (AT-MP)
- All Terrain Construction Transport (AT-CT)
- All Terrain Anti-Aircraft (AT-AA)
- All Terrain Attack Pod (AT-AP)
- All Terrain Exploration Transport (AT-ET)
- All Terrain Exploration and Survey Walker (AT-EST)
- All-Terrain Exploration Droid (AT-ED)
- All Terrain Force Reconnaissance Walker (AT-FRC)
- All Terrain Heavy Enforcer (AT-HE)
- All Terrain Riot Control Transport (AT-RCT)
The AT series from the Kuat Drive Yards sported a general design scheme resembling modern tank armor. The primary weapons were almost always some kind of laser cannon, though the amount and power varied from vehicle to vehicle. The Galactic Republic's use of the AT series consisted of vehicles with red stripes to denote their affiliation, whereas the Galactic Empire's broad use of them was without stripes.
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