"EWO" stands for "Emergency War Order," which is a military term used to describe a set of orders given to a commander during a crisis. Some synonyms for "EWO" include contingency plan, emergency plan, crisis management plan, and disaster response plan. These terms all refer to strategies and procedures developed in advance to help respond to emergencies, whether military or civilian in nature. Other synonyms could include emergency action plan, rapid response plan, and readiness plan. In any case, having a plan in place for emergencies is critical for any organization, whether military or civilian, to ensure quick and effective responses when crises arise.