| A-JAC | Armored Jet Attack Chopper. |
| Alpha Fighter | Created by Dr. Emil Lang. It is the successor to the Veritech. |
| ALUCE Base | Advanced LUnar Chemical Engineering base. |
| Anime | Animation in the style developed and commonly used in Japan since the 1950s. Generally refers to the artistic style, but also a style of characterization and stories. Can also be used to describe comics and other still art drawn in the same style: see manga. Comes from the Japanese word for animation. Used by some people to refer specifically and exclusively to animation produced in Japan, regardless of style. Pronounced: 'annie-may'.
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| APC | Armored Personnel Carrier; Lunk's vehicle of choice. |
| ARMD | Armor-class Space Carrier. |
| ASC | Army of the Southern Cross. |
| ATAC | Alpha Tactical Armored Corps; a Hovertank Unit (e.g. Dana Sterling's Hovertank Unit was the 15th ATAC). |