I have read (can't cite the sources), but believe in WWII, the average pilot was between 20-21 years old. Most fighter pilots showed up with about 200-250 hours total; some had as little as 15-20 hours in type before their first combat sorties.

Robin Olds was a Major, and the squadron commander, at 23.

"Pappy" Boyington was so-named because at 28, he was considered "old."

(I may be off a little in these numbers, but they are close).

N9373M: You got me curious, so I looked it up: color photography has existed since at least 1877, but was not readily available (to those with the money) until near the 1900 time-frame. Mass-marketed color film was not really until the mid to late 1960s (I remember that part).