since you owe years of service, possibly...but that depends if the war is still going on by then.
no. there are many ways to get into the air force. enlisted-no previous experience ROTC (in college)-study while preparing for officer commissioning in air force officer training school- already have a degree and apply to become an officer
If it wasn't prior U.S. Army service then yes.
Unless you enlist you will not go to AIT for ROTC. The enlisted side and officer sides of the military have different training schools. After ROTC you will go to BOLC (Basic Officer Leaders Course) A and B. A is like the officer Basic and B is like officer AIT.
Yes
No, prior military service is not required to be a police officer.
Go down and see the recruiter.
Do NROTC at a law school and you may be allowed to go into the non-restricted line of service. But most likely your obligated service will be served on the restricted line.
No
Yes. JROTC is in high school, ROTC is in college. Technically, you do not have to take JROTC at all to take ROTC. Generally, people who take ROTC in college are joining the military afterwards. The same in not necessarily true for JROTC.
ROTC are available from several different branches of the military. http://www.goarmy.com/rotc/scholarships.html This link provides information about how the army will grant scholarships.
Depends. If you attend one of the US Military Academies (West Point, Air Force Academy, Naval Academy, or Coast Guard Academy) or you go to school on an ROTC scholarship, you have an obligation to actively serve for five years. If you took ROTC but ROTC had nothing to do with funding your school, there is no obligation to go into the military.