A military base is a facility directly owned and operated by or for the military or one of its branches that shelters military equipment and personnel, and facilitates training and operations.
In general, a military base provides accommodations for one or more units, but it may also be used as a command center, a training ground, or a proving ground. In most cases, a military base relies on some outside help in order to operate.
However, certain complex bases are able to endure by themselves for long periods because they are able to provide food, water and other life support necessities for their inhabitants while under siege.
An Overseas military base is a military base that is geographically located outside of the territory of the country whose armed forces are the principal occupants of the base.
The overseas military base has, throughout its history of usage (and particularly in peacetime and the host country's period of civil unrest), been a contentious issue of debate, and is often a source of opposition for antimilitarists and nationalists in the host country. Such bases may be established by treaties between the governing power in the host country and another country which needs to establish the military base in the host country for various reasons, usually strategic and logistic.
Furthermore, overseas military bases often serve as the source of the military brat subculture due to the children of the bases' occupant military being born or raised in the host country but raised with a remote parental knowledge of the occupant military's home country.