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.
Nations are facing a more guerilla-style warfare – even at sea, and the equipment must evolve to meet new demands. Enter the Sea Fighter. Learn about this experimental, high-speed, "invisible" ship.
This week, U.S. officials said they dispatched scientists in December to search for dirty bombs in five U.S. cities, after learning of possible New Year's Eve terrorist attacks. Learn all about these crude weapons.