Hitler 1936-1945: Nemesis, Ian Kershaw's superb account of Hitler's final years, manages to fuse biographical insight into the life and mind of the Dictator, together with a detailed overview of the system (or lack of it) within the Nazi state structure.
We are offered comprehensive analyses of Hitler's pre-war belligerance, the lack of will in British and French government circles to prevent his imperial ambition, his early military triumphs and, ultimately, the final descent into Holocaust, defeat, and death.
Kerhaw's excellent account acts as a constant reminder of how Hitler could have been prevented at every turn but for the absence of committed opposition within the German military establishment. It is a lucid and sober lesson in the victory of bluff and outrageous chance over conventional politics and diplomacy.