Can you get a college degree while on active duty?

Yes. You're an idiot if you don't take advantage of the free TA

Very doable. Bachelors and soon a masters all on active duty and during 3 deployments, 3 duty station changes, and never once steeping into a physical classroom. Just need to have the drive and not pick a major that has weird requirements or is just useless like early British literature

Depends on your MOS and where you stationed, and most important your major. If you go for any science major then I wish you luck. Because most likely you won't be able to do classes with advanced labs in them. Especially if you not stationed in the US.