The presumption of soundness means that veteran will be considered to have been in sound condition when examined, accepted, and enrolled for service.
Moreover; Every veteran shall be taken to have been in sound condition when examined, accepted, and enrolled for service, except as to defects, infirmities, or disorders noted at the time of the examination, acceptance, and enrollment, or where clear and unmistakable evidence demonstrates that the injury or disease existed before acceptance and enrollment and was not aggravated by such service.
You will need to get all your prior-to-service militay record make sure you read, read and read. You need to prove that prior to service you was fit to go into service. After you do that and post your fact finders. We will continue
Tom