Final answer:
E.O. 9260, signed by President Franklin D. Roosevelt on October 29, 1942, established the Legion of Merit which was created in four degrees for foreign military personnel.
Step-by-step explanation:
Executive Order 9260, authorized by President Franklin D. Roosevelt, established the Legion of Merit to reward acts of exceptional conduct in the performance of outstanding services and achievements. The order was signed on October 29, 1942, and allowed the Legion of Merit to be awarded to members of the Armed Forces of the United States and also to foreign military personnel. However, the question seems to contain an incorrect date, as E.O. 9260 was signed in 1942, not on September 8, 1939. Moreover, the Legion of Merit was created in four degrees for foreign military personnel: Chief Commander, Commander, Officer, and Legionnaire.