Hi,I'm Zoey and I'll be assisting you. Are you online at this time?
The US military asks that you report these scams to IC3.gov. You have already done that. Apart from that, there is nothing saying that the photo belongs to a real soldier, only that he is not the person you've been communicating with.
It is easier to find out who a scammer isn't than who he is. However, one useful tool would be to run his photos through Google Search by Image, which is photo recognition software. If the photos have been used on the web before, you'll get to see where. Sometimes, you can get lucky and see the site from which the photo was stolen and get the name of the actual soldier.
Other times, you can just see the various scam reports and other names and profiles used by your military scammer. But if you post to those sites too and add your scam reports to the others, sometimes you will meet other people who have been swindled by the same scammer and exchange information about the scammer. That may help you to turn up the name of the actual person in the photos.
The army wants the FBI notified. The US Army has almost a million and a half men and women on active duty all over the world. So while you can certainly find a way to contact the military, they are not going to track down the subject of the photo. Hopefully, however, if you and the other victims of this scammer report the fraud, he'll eventually see it.
You're very welcome!