Connecticut Veterans Affairs gives you a bus pass at no cost. Passes are specific to the transit district you use and are not transferable. You have to show a VA Veteran Health Identification Card or a Connecticut driver license or non-driver ID with the veteran indicator when you ride.
Apply online through the Veteran Request for Bus Pass form on the Connecticut DVA forms site. You will get a confirmation email with a unique Veteran Pass ID you can reuse each month so you do not have to upload your ID again. The pass is mailed to the address you give.
A copy of your VA Veteran Health Identification Card, or your Connecticut driver license or non-driver ID with the veteran indicator.