World Invasion: Los Angeles Battle or Mission: Los Angeles in Quebec , is a science-fiction American film directed by Jonathan Liebesman and released in 2011 .
The introduction to the film evokes a real event called the Battle of Los Angeles that took place on February 25, 1942 , less than three months after the Pearl Harbor attack ofDecember 7, 1941: the DCA was fired for several hours, but the enemy identity has never been identified 1 .