I can't think of any more German perspective WW2 films at the moment, but what about some Polish ones?
Wajda's Pokolenie (A Generation), Kanał and Popiół I Diament (Ashes And Diamonds), and then later Katyń; and submarine melodrama Orzeł.
Or how about Czechoslovak/Czech/Slovak ones, like Obchod Na Korze (The Shop On Main Street), and Ostře Sledované Vlaky (Closely Observed Trains)? Or Kachyňa's Eastern front flicks Práče and Tenkrát O Vánocích? Or Atentát, about the Heydrich assassination?
On the Axis and associated side of things, Talvisota is a grim All Quiet-meets-Platoon (or 9-ya Rota etc) take on the Finnish Winter War; and Két Félidő A Pokolban is the Hungarian precursor to Escape To Victory.