Gun batteries that shoot down invading air units. Anti-Aircraft Guns are used as the specialized unit for shooting down aircraft. It appears in all versions of A&A. In AAC it can't stack. Starting with AAR it can stack, but only 1 AA Gun can fire. In AAG40 the cost is increased to 6.
| Version | Attack | Defense | Move | Cost | Special Ability |
| NGE | 0 | 3 | 0 | 5 | Fires first. Only against Aircraft. Can be captured. Only 1 shot. Only 1/area. Can be captured. |
| AAC | 0 | 1 | 0 | 5 | Fires first. Only against Aircraft. Can be captured. Rolls 1 die for each attacking enemy aircraft. Only 1/area. No combat movement. Can be captured. |
| AAE | 0 | 1 | 0 | 5 | Fires first. Only against Aircraft. Can be captured. Rolls 1 die for each attacking enemy aircraft. Only 1 unit in area can fire. No combat movement. Can be captured |
| AAP | 0 | 1 | 0 | 5 | Fires first. Only against Aircraft. Can be captured. Rolls 1 die for each attacking enemy aircraft. Only 1 unit in area can fire. No combat movement. Can be captured |
| AAR | 0 | 1 | 0 | 5 | Fires first. Only against Aircraft. Can be captured. Rolls 1 die for each attacking enemy aircraft. Only 1 unit in area can fire. No combat movement. Can be captured |
| AA50 | 0 | 1 | 0 | 5 | Fires first. Only against Aircraft. Can be captured. Rolls 1 die for each attacking enemy aircraft. Only 1 unit in area can fire. No combat movement. Can be captured |
| AA42 | 0 | 1 | 0 | 5 | Fires first. Only against Aircraft. Can be captured. Rolls 1 die for each attacking enemy aircraft. Only 1 unit in area can fire. No combat movement. Can be captured |
| AAG40 | 0 | 1 | 0 | 6 | Fires first. Only against Aircraft. Can be captured. Rolls 1 die for each attacking enemy aircraft. Only 1 unit in area can fire. No combat movement. Can be captured |