You chose HYDRA. HYDRA is a Nazi deep science division created by Red Skull who was a Nazi. HYDRA, as stated in the SHIELD handbook everyone in SHIELD, from those becoming agents to the janitors get, is a Nazi organization. Ergo, you are a Nazi and they are your buddies.
It was a war you could have ended so much sooner Ward but didn't. I know people die in wars and battles. But the casualty list could have been a lot lower had you grown a set and stood up to Garrett.
I've killed yes. And since seeing the movie I've been wondering just how many of those people I killed for SHIELD were actually HYDRA enemies. But when you busted into the Fridge and freed all those people who were locked up, many with good reason, the civilians are the good people I was referring to that will suffer now.