Home depot and Lowes have 10% discount. Lowes is year round and has a great system where you just sign up once and it's linked to your phone #.

Home depot is much more limited, and may or may not work for particular items, and doesn't work for any online orders. Veterans day, memorial day, and 4th of July discount is good for anyone who has served if you bring discharge papers. The other days of the year I think it's for active or retired 20+year military, or service disabled only.