[GroupCommanderMandrake]

Hmmmmm. . .doublechecking this I'm seeing it referred to both ways. . .would make sense it would be "Captain." I was saving the DVD I bought for Xmas present to my nephews, but guess I'll have to break it open. In any case, I'm going with "Commander" since it took so long to get it set up everywhere.

[1066AD]

Group Captain is a rank in the RAF, Group Commander is not (I'm assuming your're also referring to the character in Dr Stangelove).