I havent seen it for years but I remember preferring Mosquito Squadron (the V weapon threat just seems a bit more interesting than a heavy water plant or whatever 633 is about):
Neither movies were based on true stories. Both never happened.
What would make an interesting flick, in my opinion, would be the true story of Bombing 617 squadron, which was also known as the "Dam busters" due to their famous attacks on dams in the Ruhr valley. They equipped these Lancasters with special 12,000 lb Blockbuster bombs to attack the V1 launching ramps.
If you did not already know, Peter Jackson ( who made the Lord of the Rings Trilogy and the awesome re-make of King Kong ), is currently hard at work remaking the old "Dam Busters" movie.
So we are
FINALLY going to get a WII air war movie with absolutely state of the art digital special effects. That alone should be pretty cool.
Jackson had a brand new exact replica Lancaster build in China from scratch, to make this movie.
Here is a New Zealand TV news report, about this ultra secret Lancaster:
http://www.youtube.com/watch?v=j7pGmqkzGhA--