It's a hard pleasantly realistic war/geopolitics situation despite the semi-fantastic setting, with both ugly parts and really hopeful/funny parts.
Definitely. The conflict Lucas (and the others) face, about fighting a war or choosing your dream (or just living your life) is a very interesting and HARD dilemma, and it's a big part of what makes this series stand out to me. BTW I'm just now realizing the thematic similarities between this series and my #1 all time favorite manga Golden Kamuy. Personally I think it's very brave and admirable of the rami to stay and fight, but it would absolutely not be "selfish" of them to say no.
The Pope is still spouting bullshit though.
First, it is in no way in Zoe's best interest to be constantly fed lies, especially about something like her mother's death. Even if she's nine years old, you don't do that to a child. The Pope saying it's "for her sake" is utter, complete, 100% bullshit.
Second, about her fighting being the only way, I have a question: what would happen if, say, Zoe died? Would the Papal State automatically lose the war? I don't believe that for a second. If something happened to Zoe (or Lucas, or Demi), that would be a huge strategic blow to the Papal State, but not the end of world. Especially now that the Pope has the Mirror Ramus's power, which he specifically got to counter the Garland.
(The dilemma of fighting or not is still real, what Demi said in a previous chapter is still true, every time Zoe is not on the battlefield, other people will die. But it's not the only way to win the war. That's what makes this a compelling conflict to me.)
Generally, if anyone ever says "it's the only way, there's no other choice, it is unavoidable, it cannot be prevented", they are full of shit.
BTW I just realized another bit of worldbuilding. I remember in previous chapter some soldiers were talking about how after you die, your soul enters the Tower. Now we know where that religious belief comes from!