Murdoch crashed three times during the second World War, and died twice. He'd freaked out a couple of people who had worked with him prior to one or the other of his deaths, but they eventually calmed down and bought his "set of Identical Triplets" story which he'd sold by acting a bit different after each time he died so people would believe he wasn't the same person.
Had computerized records existed back then, he would never have gotten away with the charade.
The fact that he hated war created an interesting dichotomy. He hated war, but he loved to fly, and about the only time he got to fly these days was during times of war. The wars tainted the purity of the joy he got while flying, but he couldn't keep away from them because he couldn't stop flying. Not flying was like not breathing to him, it hurt.
The type of mission he hated the most during the war was bombing runs. Aerial dogfights he didn't mind too much. With those, it was either him or you, and you did everything you could to make it not be you, and it was okay because they did everything they could to make it not be them. Bombing runs however...During bombing runs, there was no real him or you. There was a chance that you would be shot down, but there was also the fact that civilians who had little to do with the war would be killed by the bombs that had been dropped by you and the men you flew with.
You had to do terrible things to win a war, and that was why Harailt Murdoch didn't like war.
