Tuition assistance for the military

I'm an active duty service member who is also attending school online. I did not get a 1098-T last year for the the portion of time I was in school, but I have consistently taken 1- 2 classes at a time last year every 9 weeks. Tuition Assistance through the military has paid for it, so is that considered grants? And what can I do about book expenses that I paid for?