The CityWarfare.zip file you have requested: Maps Levels Missions / Multiplayer / 6 Player / City Warfare - 406.28kb is not available. Perhaps try browsing all files for the game C&C3: Tiberium Wars and upload any files you want to share or are missing. This is the only information we could locate:
City Warfare is a 3 v 3 map from BuddaBoy, set in an urban environment. It's an infantry type map, with plenty of buildings to garrison and defend yourself.