Assume command is a phrase that refers to taking control or taking charge of a situation. There are several synonyms for the words assume command, including taking charge, leading, overseeing, managing, directing, steering, spearheading, supervising, controlling, and taking the helm. These words all convey a sense of taking responsibility and being in charge of a particular situation. Whether in a professional setting or personal life, assuming command requires confidence and authority to lead people or activities. Strong leadership is essential to make important decisions, communicate effectively, and create a positive direction for those under one's command.