I didn't mean 'why didn't Bertie flee to foreign parts?' so much as, why did you decide that they were unlikely to be called up? I personally agree with you that neither Bertie or Jeeveswould abandon their duty.

Thank you for sending me that information! I'm very sorry this is such a late reply. I love spoilers, they make the anticipation greater for me and the actual reading all the sweeter for it. :)