Periodically on this board I come across a post I simply must respond to, for no other reason than because I am both surprised by the post and equally in disagreement with essentially most or all of the advice offered in response.
This is one such thread. I’m sorry to be a complete curmudgeon, but…
OP asks, “What makes being a military not a sin…?”
–…As if it is always a sin simply to be in the military. It is not. Catholics are not required to be pacifists. Catholics are not required to refuse military service. The entire apparent premise – that joining the military is a sin – cannot be supported.
Redratfish responds, “Joining can be sinful” if done for the wrong reasons.
– This is theologically unsound, and unhelpful on a practical level, because essentially anything and everything can be sinful if done for the wrong reasons. In short, this answer only serves to confuse the OP.
George’s comment is also unhelpful: 1) It links joing the military with killing, which (falsely) suggests all killing is a sin (it is not); 2) it is factually false (Google “number of coastguardsmen killed in WWII” and see if the coast guard can be considered noncombatants…I’m gonna try googling “u-boats sunk in WWII by coast guard cutters” when I leave this thread, as my curiosity is piqued…).
Now, trying to answer OP, joing the military is not, per se, a sin, nor should it place the joiner in any specific near occasion of sin. It is – like a million other acts – generally morally neutral. That’s a concept often missing from this board: Some acts are not sinful, or laudable. Introducing the concept that they “can be sinful,” although techincally true, simply clouds the issue because anything can be sinful under certain circumstances. But MUST joining the military be sinful? No. Period.