The United States European Command State Partnership Program (EUCOM SPP), according to its own mission, is a National Guard program that "links U.S. states with designated partner countries to ... support the command’s security cooperation objectives."
Currently, 22 Partnerships exist "with former Soviet, Yugoslav and Warsaw Pact countries in the EUCOM Area of Responsibility."
Becoming independent on the dissolution of the Soviet Union on December 26, 1991, these countries shortly requested the advice and assistance of the United States in creating new self-defense forces.

They had been acquired by the Soviet Union from the European Theatre of World War II.
The requests began among the Baltic states, notably Latvia, which had approached NATO.
It sent a delegation from five member countries, including the U.S., which chose the National Guard Bureau as most appropriate spokesman, considering that Latvia could not afford a standing army.
EUCOM thus became the first of the six geographic Combatant Commands that make up the 
"global SPP," and the NG, which is divided into state-sized contingents, became the host of each state-sized new national force, typically, but not necessarily, one-to-one, totally voluntarily.
A country member must begin by requesting membership.
The very first Partnership Program was with Latvia.
The United States European Command State Partnership Program (EUCOM SPP), according to its own mission, is a National Guard program that "links U.S. states with designated partner countries to ... support the command’s security cooperation objectives." Currently, 22 Partnerships exist "with former Soviet, Yugoslav and Warsaw Pact countries in the EUCOM Area of Responsibility." Becoming independent on the dissolution of the Soviet Union on December 26, 1991, these countries shortly requested the advice and assistance of the United States in creating new self-defense forces.
They had been acquired by the Soviet Union from the European Theatre of World War II. The requests began among the Baltic states, notably Latvia, which had approached NATO. It sent a delegation from five member countries, including the U.S., which chose the National Guard Bureau as most appropriate spokesman, considering that Latvia could not afford a standing army. EUCOM thus became the first of the six geographic Combatant Commands that make up the 
"global SPP," and the NG, which is divided into state-sized contingents, became the host of each state-sized new national force, typically, but not necessarily, one-to-one, totally voluntarily. A country member must begin by requesting membership. The very first Partnership Program was with Latvia.
U.S. European Command State Partnership Program