In addition to cards relating to civilian forced laborers, the International Tracing Service (ITS), the predecessor institution of the Arolsen Archives, also received cards of concentration camp prisoners and German civilians as part of the Messerschmitt card index. The cards of concentration camp prisoners can be recognized by the fact that after the date of birth on the third line, there is no indication of the date on which the prisoner’s employment at Messerschmitt began, as in the case with the card belonging to Piotre Haschirow. If the third line on the cards shows firstly the date of birth, followed by the start date, and at the end, details of marital status, number of children, and religious affiliation, then these are cards relating to German civilians. Carl Hamann was a German foreman who began working for Messerschmitt in March 1945. You can tell by the abbreviations on the third line that he was married (v = verheiratet), had two children (2), and was a Protestant (ev = evangelisch).