Check out the information at these links of various stores and services that offer military discounts to both active and retired military personnel. You served your country for all those years thus you deserve the discounts offered.
Click on the links below and explore the various discount offers.
https://www.offers.com/blog/post/military-discounts-guide/
https://www.govx.com/
https://www.att.com/offers/discount-program/military-discount/