01.06.1944 card from Varaždin to Fp.59099-D which is 3.company, 2nd.Ausbildungs Bataillon, Kroatische Ausbildungs Brigade in Stockerau. German censor cancel is seen even on front side. Croatian post marked postcard with a letter T meaning postage due was to be paid but ignored by Feldpost service.
There are 2 very interesting things about this card are:
1) adressee it titled Ust.Mirko Biondić, Ust. being short for Ustaša , such title is rarely seen on mail to Kroatische Ausbildungs Brigade.
2) sender note his adress as 4.sat. Oklopni sklop PTS-a , meaning 4.company, Armour battalion(sklop) of PTS - Poglavnikov Tjelesni Sdrug or "Poglavnik Bodyguard Brigade" which was Ustasa militia most elite military unit.
Mail from PTS is extremely rare !!