23.04.1916 KuK card mailed from K.u.K San(itats) Instruktions Abteilung Nr.23 in Zagreb (Medical Training Detachment) to an Lieutenant in Epidemie Spital in Vinkovci. Military hospital Garnisonsspital No.23 was based in Zagreb and this Abteilung was its training unit, did it train Garnison personnel or combat medics or both is unknown to me.
Regular posatage was paid by 5 Fillir stamp cancelled in Zagreb post office 1, arrival cancel Vinkovci is also present. Zagreb Civilian KuK censorship cancel is in red colour. This censor cancel was used during months 3.1916-8.1916 , the cancels ink colour changed 3x during the day, red ink was used from 7-12h.
