"Sink the Bismarck" is indeed very accurate. And certainly, the Longest Day, generally speaking is the most accurate and far best film about D-day.

"Gods and Generals" about the US Civil War is also quite reaistic.

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"War is less costly than servitude, the choice is always between Verdun and Dachau." - Jean Dutourd, French veteran of both world wars

"A mon fils: depuis que tes yeux sont fermes les miens n’ont cessé de pleurir." - Mère française, Verdun