It actually sent me down a rabbit hole of French/Dutch resistance movies. Mostly foreign language stuff, but I think that territory is ripe for a good TV adaptation.
Try Polish ones. Poland is long viewing itself as the backing force of French Catholicism being only second to it, and sometimes being the best Cath people in the world (Italy and Spain are far from it after loosing the importance as empires), bording the Orthodox world to the East and simultaneously Protestant one to the West. Indeed, the religion is the most respected source for them: there were no cases Commie Polish political police (kinda local KGB) arrest or shoot the insurgents in the temples 1945-1990, not a single, it was possible only outside of the church. Generally their war-related art revolves around the Warsaw uprising 1944 ("Warsaw 44", or precisely "City 44", is one of the latest) but sometimes they show the details of a Nazi/Soviet occupation in 1939/40. They resisted both. The symbol of Soviet war with Nazi is the Brest-Litovsk (now Belarus) fortress siege of 1941, but a year before the small Polish Army garrison (about a battalion) defended that same fortress against Soviet troops with the same fierce determination the latter showed later. So, try Poland. BTW, unlike the other parts of former Warsaw Block, almost everyone speaks English in nowaday Poland. An upcoming war movie: "Orzeł - Ostatni Patrol" (SS Eagle - The Last Patrol) depicting last Polish Navy submarine patrol on the Royal Navy side, 1940, seems to be interesting enough.
