 During December 1993 an order of the Chief of the General Staff of the Polish Armed Forces created the 18th Mechanized Brigade ( Polish : 18 Brygada Zmechanizowana ) at the garrison in Białystok . The unit was formed from the 3rd Mechanized Regiment ( Polish : 3 Pułk Zmechanizowany ) and was subordinated to the commander of the 1st Warsaw Mechanized Division ( Polish : 1 Warszawskiej Dywizji Zmechanizowanej im . Tadeusza Kościuszki ) . On December 31 , 2001 , as a result of the restructuring of the Armed Forces , the 18th Mechanized Brigade was disbanded and in its place was created the 18th Territorial Defense Battalion . 
