Commodore, a naval rank between that of captain and rear admiral. The U.S. Navy discontinued the rank in 1899 but reestablished it temporarily during World War II. The rank was reactivated in 1982, but in 1986 the name was changed to rear admiral lower half. An officer holding this rank corresponds to a brigadier (one-star) general in the army or air force.
The Messerschmitt Bf 109 is one of few fighters ever to be developed from a light-plane design. Willy Messerschmitt's angular little plane was built in greater numbers than any other fighter. Read how the Bf 109 has been so successful and long-lived.
Legion, the basic infantry unit of the Roman army. Legions were originally small groups of armed citizens sent to deal with threats to the city.