I understand that the attitude towards overseas "military adventures" can reasonably be quite different, but coming from that region, I feel that it's morally g

I understand that the attitude towards overseas "military adventures" can reasonably be quite different, but coming from that region, I feel that it's morally good (not even acceptable/neutral) to volunteer and join the army, risking your life to defend your people with force of arms that may involve killing of enemy soldiers. And since that is morally okay, for the person who actually is pulling the trigger - then there's nothing wrong also for those manufacturing a more effective gun/vehicle/drone/etc for that soldier. There is valid criticism for some of these military-industrial companies lobbying for various horrible historical acts to improve their business, and that obviously is immoral - but that's not immoral because they make weapons but because of these specific acts which put them in the exact same position as United Fruit Company, which caused violent conflicts to benefit their banana business.