I was present at
this lecture in 2005 (
mp3 of the talk , in spanish).
Mr. Peter Brill, not an ace (4 Yak-9 downed), but I'd have attended even with 0 kills and 12 airframes lost

.
A (little) problem with this lecture and others I have been to, is that most of what is said you already know if you are a little interested in aviation history. Moveover, I don't know about G. Rall, but Mr. Brill declined to talk about his experiences on air combat, unfortunately (I guess the most important subject for us).
The most singular memory I have from his speech is that he said he was trained in a special unit of He-177 to bomb America, don't ask me how.
greetings