Pacifism is when someone does not think war or violence is a good way to stop a fight or to get ahead of someone and move toward peace. Pacifism was encouraged in the first days of people as a whole. Conscientious objector also oppose of pacifism and conscience for peace. Buddhists believe that war is a bad thing. War can't be solved just by fighting.
Compassion (or care) for all life, human and nonhuman is central to Hinduism, Buddhism, which was founded by Siddhattha Gotama (or Buddha), and also Jainism, founded by Mahavira. Both the Buddha and Mahavira were by birth kshatriya, the varna (social order) of soldiers and officials.