Marine

Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology. In scientific contexts, the term almost always refers exclusively to saltwater environments, although in other contexts (e.g., engineering) it may refer to any (usually navigable) body of water.

Marine or marines may also refer to:

Military / seafarers

Distance

Distance is a numerical description of how far apart objects are. In physics or everyday usage, distance may refer to a physical length, or an estimation based on other criteria (e.g. "two counties over"). In mathematics, a distance function or metric is a generalization of the concept of physical distance. A metric is a function that behaves according to a specific set of rules, and is a concrete way of describing what it means for elements of some space to be "close to" or "far away from" each other. In most cases, "distance from A to B" is interchangeable with "distance between B and A".

Overview and definitions

Physical distances

A physical distance can be mean several different things:

Marines

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.

Long distance

Long distance or Long-distance may refer to:

Footpaths

Media

Sports

See also

Semper fidelis

Semper fidelis is a Latin phrase that means "always faithful" or "always loyal". In the United States it is best known as the motto of the United States Marine Corps. Elsewhere, it is a common motto for towns, families, schools, and military units.

The earliest definitively recorded use of semper fidelis is as the motto of the French town of Abbeville since 1369. It has also been used by other towns, and is recorded as the motto of various European families since the 16th century, and possibly since the 13th century or earlier. Records show many families in England, France and Ireland using this motto.

The earliest recorded use of semper fidelis by a military unit is by the Duke of Beaufort's Regiment of Foot, raised in south-western England in 1685. This is apparently linked to its use as a motto by the city of Exeter since no later than 1660. Subsequently, a variety of military organizations adopted the motto.

Families and individuals

This phrase was used in Europe, at least in Great Britain, Ireland and France and probably in other countries as well. A more recent adoption is by Senator Joe Doyle, in arms granted by the Chief Herald of Ireland in 1999.