Born in the 1884 at Karlsdorf, Austria-Hungary (now Banatski Karlovac, Serbia), Iskrić entered infantry school in Liebenau near Graz when he was fourteen.

In the 11th battle at Soča (Isonzo) he commanded the Hungarian Landsturm Battalion V/4, and received the knight's cross – Military Order of Maria Theresa for outstanding conduct and bravery.

The exposed lower section at the coast of Soča made important part of defence and was one of main targets of the Italians when on 17 August 1917 the battle began.

Only under the leadership of a young captain, these forces fought for three days in heavy battles, until the reserves came to the Lom (Banjšice) heights and formed joined defence there.

Captain Iskrić was wounded during the fight and later received the Knight's Cross of the Military Order of Maria Theresa for his conduct and bravery in this battle.