I know I was right...right?

In “The Man He Killed” Thomas Hardy describes an encounter between two soldiers on opposite sides. One soldier shoots the other, but thinks about how things would be different had they met outside of battle: “Had he and I but met/ By some old ancient inn,/ we should have sat us down to wet/ right many a nipperkin!”. He is talking about how if they had met at a bar they would have sat around, drank, and been merry. The tone shifts to the contrary: “But ranges as infantry,/ and staring face to face, / I shot at him as he at me/ and I killed him in his place”. The speaker is saying how they were at battle, shot at each other, and the speaker killed the other man. Up until now the tone has been sure and unwavering that, yes they would have been friends outside the war, but he had to shoot him. However his tone shifts to uncertainty: “I shot him dead because—/ because he was my foe”. He wavers after “because” and restates “because he was my foe/ just so: my foe of course he was”. He is trying to reassure himself that he did the right thing, but deep down he knows just because that man was his foe does not justify murder. A continuation in the tone shift is when the speaker continue with “That’s clear enough; although/ He thought he’d ‘list, perhaps/ off-hand-like—just as I—/ Was out of work—he had sold his traps—/ No other reason why”. The speaker contemplates the probability that the man he killed was not much different from himself, thinking perhaps enlisting was this man’s only option; like himself. The next stanza is a mild shift, more of a continuation and expansion on the previous stanza: “Yes: quaint and curious war is!/ You shoot a fellow down/ You’d treat, if met where any bar is,/ Or help to a half-a-crown”. Once again he revisits the idea that if they had met at a bar the two men would drink, talk, and be merry. In conclusion, the speaker begins thinking of how things would be different if they had just met elsewhere-to-but we met in war so I killed him-to-why did I shoot him? I shot him, because he was my enemy (he is second guessing his reasoning, doubting himself)-to-thinking of how this man was probably not much different from himself-to-revisiting the nagging thought that if they had met at a bar somewhere he probably would have bought the man a drink and had a good time together.