Beggin' pardon and all, but those weren't "tragic events."
They made up one of humanity's finest days, in which literally satanic evil was fought and defeated, and the beginning of freedom was established for hundreds of millions of people.
"Greater love has no one than this: to lay down one's life for one's friends."
- John 15:13
That said, don't you think it could reasonably be viewed as tragic if 13,000 sons, brothers and dads never returned home, just because some bigoted socialist megalomaniac and his thug buddies had managed to highjack a country that was down on its luck, take over much of a continent and menace the whole world?