Then you might find this story about British collaboration in the Channel Islands' Shoah interesting: https://medium.com/lessons-from-history/wwii-mythbusting-tour-british-exceptionalism-4a82d62def64

My paternal grandpa lost his religion after his father was murdered by a Ukrainian Cossack in 1919. The following year he went back to Vinnitsya to get my grandma out, using the $ from his British army Jewish Legion pay to bribe Romanian and Bolshevik border guards, arriving in NY in 1921. My very Jewish but forever faithless father arrived in 1923.