According to the U.S. Department of Veterans Affairs 2021 National Veteran Suicide Prevention Annual Report, Office of Mental Health and Suicide Prevention, 2021 National Veteran Suicide Prevention Annual Report (PDF) :
The U.S. population, as well as the Veteran population, experienced a decrease in the suicide count and rate from 2018 to 2019. 45,861 Americans adults died by suicide in 2019. Veterans accounted for 6,261 of these deaths.
For this report, a Veteran is defined as someone who has been activated for federal military service and was not currently serving at the time of death.