Summa Theologica

IIa IIae q. 40 : Of War (Four Articles)

[Letter] [A4] Entire question
[Letter] [A4] 1. Whether it is always sinful to wage war?
[Letter] [A4] 2. Whether it is lawful for clerics and bishops to fight?
[Letter] [A4] 3. Whether it is lawful to lay ambushes in war?
[Letter] [A4] 4. Whether it is lawful to fight on holy days?