The citadel_v1.zip file you have requested: Maps / Multiplayer Maps / Yuris Revenge / Citidel - 116.49kb is not available. Perhaps try browsing all files for the game C&C: Red Alert 2 and upload any files you want to share or are missing. This is the only information we could locate:
A 4-player Yuri's Revenge map with two different terrain types. The top two players get a cityscape while the bottom get a grassy area. It looks good for a 2 vs 2.