The HostileDawn_BETA.rar file you have requested: Maps Levels Missions / Hostile Dawn - Beta - 1.01mb is not available. Perhaps try browsing all files for the game C&C: Red Alert 3 and upload any files you want to share or are missing. This is the only information we could locate:
This is a remake of C&C Generals map with two bases separate by water and connected to a small center island by a bridge. The lower terrain combined with all the water gives rise to some great amphibious landings and risky land attacks across a bridge.