In either episode 2 or episode 4 of season one (or possibly both, at separate times?), Philip and Elizabeth talk explicitly about how now that the Cold War is ramping up, they're being asked to do harder and darker things. This suggests that while they were certainly carrying out various spy duties prior to where we first see them in season one, those duties didn't require nearly as much killing. So I think that's the first thing that changed--the job itself changed.
Once that got set in motion, I think it still took a while for the sheer amount of killing to catch up with him. It's pretty clear that the soldier he killed in "Martial Eagle" was a turning point for him, though. He hasn't been quite the same since.
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timeasmymeasure
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Date: 2015-09-04 08:52 pm (UTC)Once that got set in motion, I think it still took a while for the sheer amount of killing to catch up with him. It's pretty clear that the soldier he killed in "Martial Eagle" was a turning point for him, though. He hasn't been quite the same since.
-J