Naval warfare[r]: The military history of the organized navies of the world from 300 BCE to the present. [e]
U.S. Department of Defense[r]: one of more than a dozen U.S. executive-managed government agencies; this one administers the military forces of the United States, and their supporting civil servants. [e]
Littoral warfare[r]: Air, sea, subsurface, and land warfare that takes place in waters near a coast, or on coastal land areas. [e]
Mine warfare[r]: An area of military technology and doctrine, which deals with the development, use of, defense against, and removal of land mines, improvised explosive devices, and sea mines. These devices are characterized by being distributed prior to the presence of an adversary; the mines trigger either by sensing the enemy, or by command from friendly forces. [e]