I think they were able to grow economically. It made empires richer and formidable. For example, the Assyrian empire was able to expand their trade over the country. They were able to create trade routes, assimilate their culture with others. They were able to spread their religious beliefs in various places in the world.
Not only were soldiers affected by the tragedies of the war, but civilians were affected also. It is estimated that approximately 5 million civilians died due to war-induced causes. The birth rate sharply declined during the war period as well.
