Director Jonathan Teplitzky's sombre, ponderous drama attempts to portray the different sides of Winston Churchill, set during the four days leading up to the allies' invasion of Normandy in June 1944.
We see Churchill (Brian Cox) as a statesman, depressive alcoholic, bully, relentless battler and orator, and as a broken man held together by long-suffering wife Clemmy (Miranda Richardson) - it's a roller coaster few days.
We also learn, from a script by historian Alex von Tunzelmann, that Churchill, the man Brits voted in 2002 as the greatest Britain who ever lived, did everything he could to convince General Dwight Eisenhower (John Slattery) not to go ahead with Operation Overlord, the invasion of France.
Churchill's reluctance to send young men to their fate on the beaches of France was due - which will be poignant for Anzac audiences - to the crippling guilt he felt over his decisions at Gallipoli in World War I.
Almost an apology, this theme runs throughout as we watch Churchill and Eisenhower fight it out in front of their military teams - interestingly, it's clearly Churchill who has lost the dressing room.