Answer: Egyptian religion was a mixture of values and traditions that would include Egyptian mythology science medicine psychiatry magic spiritualism herbology as well as the modern definition of 'religion' as belief in a greater force and after-death existence. In every aspect of the lives of the ancient Egyptians, religion played a role because life on earth was seen as just one part of an everlasting journey, and one needed to live a life worthy of continuity in order to continue the journey after death.
It depends on the country. Some countries have respect for their enemies and would return bodies of fallen soldiers. Others would keep them as trophies. It completely depends on the country.