After 7 years and a little luck, I think I may have finally found my great-grandfather:
Čurković Ante, PatrfTitUntJäg., bh. FJB. Nr. 4, 3. Komp., Bosnien, Zupanjac, Korito, 1883; verw.
http://digi.landesbibliothek.at/viewer/resolver?urn=urn:nbn:...My great-grandfather was born in 1877 but the above record shows 1883. The only other person with that name around that time was born in 1881. I have seen spelling errors in the Verlustliste (both people and place names). Is it safe to assume that the date of birth in these records could be plagued with errors as well? Besides paying the archives in Vienna to do the research to possibly (not) verify that this is my great-grandfather, what other alternatives do I have?
Also, based on the above information, can I learn more about where my great-grandfather may have been stationed during the war? Based on stories I have heard, he served somewhere in Galicia near Romania. It would be nice to learn more about him. He died shortly after returning from the war so our knowledge about him is confined to a few short stories.
Thank you in advance for all your help.