A very small find from Biggles in the Blue

[sholio]

I never really noticed this before, and it's interesting to me. This is Bertie and Ginger talking about newly arrived reinforcements:

‘Don’t tell me they are pals of von Stalhein,’ said Bertie, in a startled voice.

‘They’re more likely to be pals of Zorotov.’

‘D’you know, old boy, I believe you’re right,’ returned Bertie slowly.

I think it's interesting that even Biggles's friends (at least some of the time) draw a distinction between Erich and the people he's working with.