‘Battle: Los Angeles’ Based on True Story?!

My friends and myself have been having fun in the world of conspiracy theories, and this afternoon my buddy Travis sent me this link that details the conspiracy of the 1942 “Battle of Los Angeles”. Doing a little Google search I came across an official Wiki page for the event that writes: “The Battle of Los Angeles, also known as “The Great Los Angeles Air Raid,” is the name given by contemporary sources to the rumored enemy attack and subsequent anti-aircraft artillery barrage which took place from late February 24 to early February 25, 1942 over Los Angeles, California. The incident occurred less than three months after the United States entered World War II as a result of the Japanese Imperial Navy’s attack on Pearl Harbor.” All of the sources display the following newspaper image from the LA Times that is also used on Columbia Pictures’ teaser posters that were posted around this past July’s San Diego Comic Con. So, is Jonathan Liebesman’s Battle: Los Angeles, which arrives in theaters March 11, actually based on a true story? Do some digging – and you tell me.
Have you ever heard of the Battle of Los Angeles? Few have. Imagine a visiting spacecraft from another world, or dimension, hovering over a panicked and blacked-out LA in the middle of the night just weeks after Pearl Harbor at the height of WWII fear and paranoia. Imagine how this huge ship, assumed to be some unknown Japanese aircraft, was then attacked as it hung, nearly stationary, over Culver City and Santa Monica by dozens of Army anti-aircraft batteries firing nearly 2,000 rounds of 12 pound, high explosive shells in full view of hundreds of thousands of residents. Imagine all of that and you have an idea of what was the Battle of Los Angeles.“….more.