When he gives that limp wristed salute he looks that way to me. Not sure that he did anything all that extraordinary in WWI other than being gassed. OK, I guess he had some mild manner of success - probably more political than anything else as he was a bit of a charmer even then. He did make Corporal - so obviously distinguished himself in some small way.
That is because you were taken in by that verdammte Allied propaganda! Such filthy lies! They told lies! But nobody ever said a bad word about Winston Churchill, did they? No! “Win with Winnie!” Churchill! With his cigars, with his brandy. And his ROTTEN painting! Rotten! Hitler, THERE was a painter! He could paint an entire apartment in one afternoon! TWO COATS! Churchill. He couldn’t even say “Nazi”. He would say “Nooooozeeehz, Nooooozeeehz!” It wasn’t NOSES, it was NAZIS! Churchill! Let me tell you THIS! And you’re hearing this straight from the horse - Hitler was better looking than Churchill. He was a better dresser than Churchill. He had more hair! He told funnier jokes! And he could dance the PANTS off of Churchill!