I did some research and was unable to find out if the VAC Disability Pension needs to be included on your tax return, or where to put it (if it is needed). I would recommend asking the CRA or Veterans Affairs Canada.
You can call Veterans Affairs Canada at: 1-866-522-2122
You can call the Canada Revenue Agency (CRA) at 1-800-959-8281. This page has more ways to contact the CRA: https://www.canada.ca/en/revenue-agency/corporate/contact-information/telephone-numbers.html
