I'm hoping to find some basic information about my great-grandfather's service in WWI, I believe in the Austro-Hungarian army. His name was Izak Katz and at the time he lived in Zhuravno, though he was originally from Radziechow.
He was Jewish if that helps at all, though I know Katz and probably Izak/Isaac, Itzak Katz was a common name. Any help to point me in a direction would be very appreciated.
Thanks!
Amy