Can someone submit an OCS packet while deployed to Kosovo?

3/4 of the battle is assembling the application.

Yes, you will be able to submit a packet. Often times if you are deployed and miss the deadline, they will still accept your packet.

I would imagine you could. I submitted mine from C.O.B. Speicher, Iraq. Now I had to ensure that things moved along on schedule by checking on my packet twice per week. I also had an inside guy-- my former Basic Training Drill Sergeant was the 25th ID CG's Commo guy, so he made sure the CG signed stuff he needed to sign too. But the bottom line is that you can, should, and ensure that it gets completed and moved along at the prescribed times. It's work, but it'll be worth it.