[10][11][12] On March 17, 2014, The Daily Telegraph reported, as part of its live coverage of the annexation of Crimea by the Russian Federation, that Poland's defence ministry had announced it was re-launching plans to establish a joint Polish, Ukrainian and Lithuanian military brigade.

[13] The ministry said "defence ministers would meet later that week to discuss the formation of the brigade that would straddle Nato’s eastern border and bring Ukraine’s armed forces closer to the Western fold".

[14] The brigade has its headquarters and staff in Lublin,[5] Poland, with the national components stationed in their respective countries and actually gathering together only for exercises and foreign missions.

[23] Despite initial concerns that the LITPOLUKRBRIG provoked Russia, since 2016 the "Trilateral Brigade" (this term is used by the US military to identify the unit) has continued operating out of Lublin and pursued its "four main missions of international cooperation: executing and participating in battle staff training, battalion staff officer courses, multinational exercises, and activities of the Joint Military Training Group–Ukraine.

"[24] Even with the 2022 Russo-Ukrainian War, the Trilateral Brigade HQ is staffed by a blend of army personnel: 5 Lithuanians, 58 Poles, and 18 Ukrainians.

Finally, the success of the Trilateral Brigade has led two researchers - Lt Col Jahara Matisek (US Naval War College) and Prof. Will Reno (Northwestern University) - to contend in 2022 that this unit provides a comparative advantage and flexible options against Russia, and is a model for future security cooperation between NATO and non-NATO militaries.

At around this period of time, fake news spread of several brigades including the LITPOLUKRBRIG being sent to Southern Ukraine to fight on the Kherson front consisting of 9,500 men and 279 pieces of equipment.

On the same day, the LITPOLUKRBRIG Twitter account made an official statement that the alleged paper stating that Poland would send soldiers over to fight was not true.