[Snowflakian]

You guys pretty much nailed it.
The only time Steve Rogers should be okay with killing is times of war. Though he is a soldier, and well shit happens, he's a good man who still gets bothered by it.

In FI, I can understand it a shade, as I said. Time of war and all that. Outside of that, he's supposed to be more cautious depending on the circumstances.

Kree-Skrull war though I'm not sure. I can see why he had his no killing stance prefering prisoners of war and to let justice handle the war criminals, but I can also see why in FI with the WWII connection that he may be more gung ho about protecting people by taking enemy combatants lives in a time of war.

Ah well, I still love the quote in the Cap movie: "Not just a soldier, but a good man." Showing that just being a soldier doesn't make you the other, and yet you can be both if you have a good heart.