Dumdum Bullet, a soft-nosed bullet that flattens out when it strikes its target. It inflicts a far more severe wound than a standard bullet with a hard point. The name comes from the British arsenal at Dumdum, near Calcutta, India, where such bullets were made in the 19th century. The Hague Conferences of 1899 and 1907 banned the use of dumdum bullets in war.
Destroyer, a highly maneuverable warship of small to medium size. The destroyer is designed to attack enemy vessels, especially submarines, and to protect other types of ships from air, surface, and submarine attacks.
The U.S. Navy's new subs will use photonics masts instead of periscopes. Learn how these imaging devices will work.