Columbia may refer to:
TheColumbia is one of the first breeds of sheep developed in the United States. The product of USDA and university research, it was intended to be an improved breed specially built for the Western ranges of the country (where the majority of sheep raising takes place). Beginning in 1912 in Laramie, Wyoming, Lincoln rams were crossed with Rambouillet ewes. In 1918, the foundation flock was moved to the U.S. Sheep Experiment Station near Dubois, Idaho, for further refinement. Today's Columbia is a popular breed, with heavy, white fleeces and good growth characteristics. It is one of the larger breeds, and is often used for cross breeding in commercial western flocks.
Adult rams weigh between 275 and 400 lb (125 and 181 kg), while females weigh between 175 and 300 lb (79 and 136 kg). An average fleece from an ewe weighs from 10 to 16 lb (4.5 to 7.3 kg) with a yield of 45 to 55%. The staple length of the wool ranges from 3.5 to 5 in (8.9 to 12.7 cm). The wool is classified as medium wool with a spin count of 50s to 60s. The wool varies from 31.0 to 24.0 microns.
SS Columbia may refer to
Marine: A Guided Tour of a Marine Expeditionary Unit is a 1996 book written by Tom Clancy about the inner workings of a Marine Expeditionary Unit.
Marines, also known as a marine corps and naval infantry, are an infantry force that specializes in the support of naval and army operations on land and at sea, as well as the execution of their own operations. In the majority of countries, the marine force is part of the navy, but it can also be under the army like the Troupes de marine (French Marines) and Givati Brigade (Israeli Marines), or form an independent armed service branch like the United States Marine Corps and Royal Marines.
Historically, tasks undertaken by marines have included providing protection from war while at sea, reflecting the pressed nature of the ships' company and the risk of mutiny. Other tasks would include boarding of vessels during combat or capture of prize ships and providing manpower for raiding ashore in support of the naval objectives.
With the industrialization of warfare in the 20th century the scale of landing operations increased; this brought with it an increased likelihood of opposition and a need for co-ordination of various military elements. Marine forces evolved to specialize in the skills and capabilities required for amphibious warfare.
Doom is a series of first-person shooter video games developed by id Software. The series focuses on the exploits of an unnamed space marine operating under the auspices of Union Aerospace Corporation (UAC), who fights hordes of demons and the undead in order to survive.
Doom is considered to be one of the pioneering first-person shooter games, introducing to IBM-compatible computers features such as 3D graphics, third dimension spatiality, networked multiplayer gameplay, and support for player-created modifications with the Doom WAD format. Since the release of Doom in 1993, the series has spawned numerous sequels, expansion packs, and a film.
Since its debut, over 10 million copies of games in the Doom series have been sold.