Carton de Wiart is one of those historical figures that you couldn't put into an action movie, because the audience would refuse to believe that they could possibly exist, and would likely overshadow the main hero anyway. Here's his Wikipedia article if you want to see a life story more interesting than Forrest Gump's.
However, the man would never come to command anything above a division, and that was a division that never left the British Isles. Aside from a brief campaign in Norway, he wouldn't really lead frontline units during World War II. In fact, much of the war for him was spent in a Prisoner of War camp (he tried digging a tunnel for 7 months, alongside four other attempts to escape, though he might have gone a little faster if he had two hands). Your challenge is to change that. The goal is to have have him attain the ran of General or above, commanding a Field Army or Army Group. I'm not sure about his actual abilities as a military commander (aside from presumably halting the German Blitzkrieg with his face), but damn if he wasn't determined.
