On the night of Sunday to Monday (26-27 July), about 60 vehicles, including Leopard 2 tanks, as well as armoured and transport vehicles from the 93rd Tank Training Battalion (German: Panzerlehrbataillon 93) from Munster (Lower Saxony) set off from the military training ground in Orzysz to Lithuania. The march took place through the alleged Suwalki Isthmus, a strip of land about 65 kilometers wide, located between the Russian exclave of Königsberg and Belarus.