The insignia for General of the Army and General of the Air Force were originally the same. The insignia for General of the Air Force was slightly modified in the 1950s for wear on the new blue Air Force dress uniform. The insignia of General of the Air Force, however, has never been worn by an officer of the present day (1947–present) Air Force on active duty. Public Law 333 of the 79th Congress changed the five-star rank to a permanent grade, and established that officers placed on the retirement list while in that grade would receive full pay and allowances (under Public Law 282 first establishing this grade, retirement had been at 75 per centum).