The citadel_v1.zip file you have requested: Maps Levels Missions / Multiplayer / Citidel - 116.49kb is not available. Perhaps try browsing all files for the game C&C: Yuri's Revenge and upload any files you want to share or are missing. This is the only information we could locate:
This is a map made using Final Alert map editor downloadable from"http://commandandconquer.filefront.com/file/Final_Alert_2;35585"this is a 4 player map featuring highley defendable start locations but very few resources, the idea is 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.