I'm looking for any information about my Jewish great grandfather, Oskar Tannenbaum, born probably in Romania and died in Berlin in 1937. I know he fought on the Austrian side in WW1 and would like to find out more about this. It's possible he was doing some kind of translation work, but I can't be sure of that.
Are there any records available online, or elsewhere? I found another thread from last year that suggested there was a list somewhere, but I couldn't work the links and download necessary plug ins.