Curtiss P-40 top ten ace list

[knusel]

Good morning Gentlemen,

I've just finished working through "Tomahawk and Kittyhawk Aces of the RAF and Commonwealth" by Andrew Thomas. It's the fourth Andrew Thomas book that I've read and I enjoyed it very much.
Few questions remain:
1. Clive Caldwell faked his birth certificate to become a fighter pilot. What is his correct date of birth and what was his faked date of birth ?
2. How many combat missions did Caldwell fly in WW2 ?
3. There's a vivid description of a combat of Witold Urbanowicz against a Japanese plane. Urbanowicz's guns jammed but the Japanese slammed into the ground at high speed. I would call that a manoeuvre kill. Why isn't it included in his kill list ?

Cheers,

Michael