VA Form 21-0781 & 21-0781a: Statement in Support of Claim for PTSD In order to apply for service-connection for PTSD, veterans need to need to complete VA Form 21-0781 or 21-0781a to support their claims. The purpose of these forms is for you to describe the stressor that contributed to the development of your Post … Continue reading How To Complete VA Form 21-0781