Because what used too be a 2" x 4", is now a 1.5/8 x 3.5/8.
If one would always go to the closest inch, nothing would fit.
It depends on why you were honorably discharged, but short answer YES you can re enlist unless it says otherwise in your discharge.
Just because you have a new identity doesnt mean your a "new" person. The military will know you have served before under a different name which is why they ask the did you...
Do you call it sprite or sierra mist?
I have a twin size bed and I'm fat so there are no sides. I take up the whole space