Not only in situations of war but in all circumstances we should save some amount of money because a person is not moneyed all the time. Sometimes a person is wealthy enough that he spend continously and don't think regarding future so when there comes a time when he Don't have any amount then be regret for his act but regression cannot give you anything so try to be ready for every situations and do not over spend on those substance which are not a Compulsory part of life.
Even the after effect of the war would be bad because now, the nation would have to start all over again and then it'll take them longer time to get to a more balanced standard before being able to forge ahead fully into survival. There are no benefits in war, because everyone suffer from it cause ranging from, adult and children. Cities that took years to build will up going down in just one day. The sight of war is scary and people who has experienced will not want to experience it again.