At the beginning of September, Lent's squadron, 7./JG 132, relocated to Großenhain near Dresden, in preparation and support of the annexation of Czechoslovakia. Lent flew a number of operational patrols in this conflict until his "Staffel" relocated again to Rangsdorf on 29 September 1938. After the tension over the occupation of the Sudeten territories eased, Lent's unit began a conversion to the Messerschmitt Bf 108 "Taifun". On 1 November 1938 III./JG 132 moved to Fürstenwalde, between Berlin and Frankfurt an der Oder, and was renamed II./JG 141, and Lent was posted to the 6th Squadron.