The big_omaha_beach.zip file you have requested: Maps / Conquest / Big Omaha Beach - 9.4mb is not available. Perhaps try browsing all files for the game Battlefield 1942 and upload any files you want to share or are missing. This is the only information we could locate:
This New map makes the original Omaha beach map with one called Big Omaha Beach which makes the boundaries even bigger. It adds a new spawn point for the german's. it also adds a lot more vehicles. This custom map requires road to rome expansion. enjoy!