A non-fiction book which covers the beginning of World War II full of pictures, many of which I have never seen, each one with an engrossing caption.
Atlas of World War II is incredible, it covers all theaters of the war, provides copies of the maps the generals used (along with their notes on them)
The Allies: Churchill, Roosevelt, Stalin, and the Unlikely Alliance That Won World War II – recounts how Russia became and unlikely ally with the US & England