If you're looking for manga similar to Zipang, you might like these titles.
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Fall, 1943, eastern front. The story follows the 8th Panzer company as they meet the advance of the Soviet forces after the failure of Operation Citadel.
A story of armoured warfare in the winter on the Eastern Front of World War II.
A drama set during World War II where a submarine carrying a secret weapon attempts to stop a planned third atomic bombing of Japan.