Beachhead was an canceled Call of Duty: World at War multiplayer levels. Loadscreens and minimaped of this levels can be found in Call of Duty: World at Wargame files, and names can be found in file "mpui.str" in raw/English/localizedstrings Jpeg directory. This large level can be seen to appear to have been designed for an vehicles matches in a Japanese environment which can be seen.
Gallery
Overhead view of map.
Trivia
This is the only map showing it was going to feature controllable Japanese and American tanks.