On 21 July the regiment was relocated again, this time in the vicinity of Orléans where it was based for four weeks. The regiment was ordered to detach two Panzer companies and the headquarters unit of the I. "Abteilung" (1st Battalion). These units, augmented by other Panzer companies, formed four "Schwimm-Panzerabteilungen" (amphibious tank battalion) for Operation Sea Lion, the planned and aborted invasion of the United Kingdom. The remnants of "Panzer-Regiment" 2 were then transferred to East Prussia, where they were based at Heiligenbeil, present-day Mamonovo.