I don’t see any reason to expect Swedish women to be more aggressive than Spanish ones, to pick just two countries with and without state religions. Or Danes and Germans, to pick two which even share a border.
Based on what data? Have you done any surveys? Have you found out that the infantry and combat engineers in Afghanistan and Iraq were just having an absolute blast during a fire-fight?
I was in the military for 30 years (naval officer so never really in the same type of danger) but in a shore job I did have an Afghan vet working for me. I’m sure that between PTSD counselling sessions he looks back fondly on those jolly times.