In 2004, the EU Member States' Defence Ministers approved the creation of 13 battlegroups, which have been fully operational since 2007.

In 2006, the Defence Ministers of France, Germany and Poland agreed on the need for the establishment of the Weimar Battlegroup.

Negotiations on the structure, the contribution of states and functions of the Group began in January 2009[3] and ended on 5 July 2011 with the signing of an agreement by representatives of the Weimar Triangle countries to NATO and the EU.

According to the agreement:[4] The core of the Weimar Battlegroup numbered approximately 2,100 soldiers, or motorized infantry battalion to Rosomak issues 17 Mechanized Brigade.

[5] The manoeuvre battalion consists of: The group was able to undertake combat operations within 15 days (the first 5 days will be to decide on the use of force and planning of the operation, a further 10 for deployment in the mandate area), after which it could commence a mission lasting from one to four months, in line with Chapters VI and VII of the Charter of the United Nations (additionally, it could interact with the forces of the UN and NATO, should this become such an eventuality).