The mekong_delta.zip file you have requested: Maps Levels Missions / Single Player / M to N Titles / Mekong Delta - 34.78mb is not available. Perhaps try browsing all files for the game Battlefield 2 and upload any files you want to share or are missing. This is the only information we could locate:
This map plays in the Mekong delta and the USMC has to attack this area. Single player is supported in all versions 16, 32, 64. Coop is supported too.