The Special Purpose Expeditionary Force was created in May 2014, after the attack by an unknown enemy on Japan. The SPEF is raised entirely from Japanese Self-Defence forces, and is expected to begin their mission on September 2014. It is to consist of over 50,000 troops, not including support units. The SPEF is also to be equipped with the new Type 10 Main Battle Tank. Its commanding officer is not known, and strict secrecy is kept about the SPEF.

(Update when more information becomes available.)