The cs_warzone.zip file you have requested: Maps / CS: Source Warzone Map - 2.06mb is not available. Perhaps try browsing all files for the game Counter-Strike: Source and upload any files you want to share or are missing. This is the only information we could locate:
Two bases with a guard tower & bunker on each. A tunnel on each base that leads right into the battlefield and in the centre of the map is a bombed out bunker that has a radio communications on it, that will order an airstrike.