Book:
God Bless Our Troops by Jill Biden
Web Resources:
Select K-5, then Digital Video Collection. If you search for Veterans Day, there is a video that will come up about the significance of Veterans Day. It's about 10 minutes long, and is probably best for grades 2 up.
Veterans Day/patriotic lesson ideas and printables. Search Veterans Day, then narrow by type of resource and grade level.
The Department of Veterans Affairs also has a site for kids, which has information, games, and links to related sites.
http://www.meetmeatthecorner.org/episode/veterans-day-for-kids-interview-with-tuskegee-airman
Meet Me at the Corner has a video interview with a Tuskegee Airman (about 5 minutes), as well as links to other resources that might be useful. It links to Enchanted Learning, which appears to have many printables and craft ideas.