My dad talked about a harrowing mission in a C-124 back when I was just a infant.
We lived in Dover Delaware and he was an Air Force pilot. They regularly flew missions out to Thule Air Force Base. The rumor was there was a naked woman behind every tree. Of course there were no trees.
Anyway, he said on one mission they had to spend the night and the airplane had no hangar. It was brutal cold. The plugs fouled on the engine and the mechanics had to replace all the plugs in the brutal cold. They went through three sets of plugs and it was all they had. If it did not start they were going to have to stay another night.
I think the engine used the Coffman engine starter system.
Anyway has this one more way to start an engine.
https://en.wikipedia.org/wiki/Coffman_engine_starter