In the US the National Guard is part of the reserve military with units by state
My brother use to be in the National Guard.
United States National Guard
The United States National Guard, also commonly referred to as the National Guard, is part of the reserve components of the United States Armed Forces. It is a reserve military force composed of National Guard military members or units of each state and the territories of Guam, the Virgin Islands, Puerto Rico, and the District of Columbia, for a total of 54 separate organizations. All members of the National Guard of the United States are also members of the militia of the United States as defined by
Department.
The National Guard has both active and inactive (reserve) members as well as full and part-time members. Part-time Guard members are referred to as 'weekend Warriors' both by the military and civilians.
State service.
The Governor may call individuals or units of the Louisiana National Guard into state service during emergencies or to assist in special situations which lend themselves to use of the National Guard.
The state mission assigned to the National Guard is:
"To provide trained and