08.05.1944. letter mailed from Osijek to a member of Dojavni vod, 3.p.z skupina in Brod na Savi ( Signal Platoon, 3.anti-aircraft group(p.z skupina = flak abteilung). Adressed to recipient as Protuzrakoplovac - Anti-aircraft man.
3.anti-aircraft group was formed in 1943 in Brod N/S. Each anti-aircraft group consisted of three heavy and one light battery.
Letter was correctly franked with 3,5kn stamp with 2 kuna war tax paid. Purple censor mark CENZURA *79* BROD n/S is on the front of the cover, back has no signs of postal manipulation. Letter content is absent.
