What's wild is, it kind of resembles Golgotha, the aborted FPS/strategy tank shooter from Crack Dot Com, the studio formed by former Id Software Linux evangelist Dave Taylor.
Golgotha was to be Crack's second game, but they folded before it could be finished, and released what code and assets they did have as open source (this was when CatB was still fresh).
Having the same name was an understandable marketing decision, but I think it probably harmed it in many ways. The game is interesting and different even today (although I’ve mention my reservations about it further up)
[1] https://en.wikipedia.org/wiki/Battlezone_(1980_video_game)