Tramadol has a low abuse potential but it is physically addictive. I heard the withdrawal isn't as bad as other opioids in the sense of physical withdrawal but nevertheless any withdrawal is horrible. I heard the depression from Tramadol can get bad, worse than withdrawing from stronger opioids.
The reason for this is because as well Tramadol being a opioid it also inhibits the reuptake of norepinephrine as well as inducing serotonin release, most other opioids do not do that. Have you talked to a doctor about weaning slowly off Tramadol? Or do you want kick it cold turkey?
I would talk to your doc about weaning because it's the easiest way.
Hang in there man it is tough and thanks for your service to this country!