Question:

If a veteran has already started drawing social security, and then becomes permanently and totally disabled due to military service, can the veteran then get an additional amount from social security due to their disability status?

Jim's Reply:

Disabled folk often qualify for SSDI...Social Security Disability Insurance. It's a bit of a laborious process to get though but if the applicant is eligible he or she will receive benefits equal to their SSA full retirement age...the maximum benefit. When the beneficiary is old enough to begin to collect SSA retirement benefits the SSDI will quietly convert to the full retirement age benefit.
 

The SSA even makes a few allowances to speed processing for the veteran who is rated 100% P & T disabled by the VA on the application for SSDI.
 

Beyond that there is no other benefit. You tell me that you're collecting your SSA retirement so you aren't eligible to apply for SSDI. The good news is that there is no offset when you receive both benefits. Good luck.