Fubar is a terminology used during World War II to describe a mission that had been severely messed up or an event that was complete chaos. A mission that is coined this usually had a terrible outcome that led to many being killed.
Some people and soldiers, usually war veterans, still use this word in the 21st century.
In The FilmEdit
There are two meanings. They are:
Fouled Up Beyond All Recognition (clean version).
Fucked Up Beyond All Recognition (what the army commonly meant it to be).