27.07.1943 Croatian feldpost between two domobran soldiers serving in different units. Mailed from Sarajevo by a member of 2.sat Sarajevska posadana bojna (2.company of Sarajevo garisson battalion) to a member of 1.sat 4.željeznička stražarska (ŽESTRA) bojna, in Zaprešić near Zagreb (1.company 4.railway protection battalion). Zaprešić is misspelled on the cover as Zapršić.
The sender drew a square in the top right corner with a big letter T inside and text "Spoložaja". T means postage due was to be paid ( from french 'Taxe') while text 'Spoložaja' is Croatian meaning "from the (battlefield) position". This square was cancelled by the Sarajevo post office and letter was accepted for mailing with postage due to be paid. There is no arrival cancel or marks that postage due was collected. Croatian soldiers were supposed to pay regular postal charges.
Probably this was philatelicaly inspired letter, but it was recognised as curiosity already during the War. This letter was published in the philatelic magazine 'Hrvatska Filatelistika' in issue No.10-12 of 1944 on page 153.
