De-mobilization refers to the process of reducing the size and strength of an armed force. Antonyms for this word include mobilization, expansion, growth, and reinforcement. Mobilization refers to the act of assembling and organizing troops and supplies for active duty. Expansion pertains to the enlargement or extension of the size, scope, or capability of a force. Growth, on the other hand, signifies an increase in the number, strength, skill, or resources of a military body. Lastly, reinforcement suggests the adding of additional troops, equipment, or support to strengthen an existing force. Together, these antonyms stand in contrast to the process of de-mobilization, which involves the downsizing and reduction of an armed force.