hey he can postpone it for few months the he has to serve to army.he has to go to military service fistly then office will send him to military hospital,if his disease can be prevention his duty on army,He will be out of the army.but if he is not seriously ill he has to go to army after he gets better.it is impossible to escape from turkish army.I escaped for few moths but Im here now
in turkey people says that any family accept their girl's marriage if her man didnt finished military duty
for that reason I came to army

I hope these are clarify your man's condition

As others told there are two versions for university graduates. One is 12 months and the other is 6 months. On the other hand the main difference between these two is not the sallary. The main differences are your rank and conditions.

In the shorter version you are a sergeant and you are inside the military 24 hours a day. You will probably sleep with 6 to 30 others in the same room. Some of these people will not be very clean. They will wake you up at a certain time in the morning and you will tidy your bed in a certain way. You will use the same bathroom with many many others.

In the longer version you are a lieutenant and it is like a job. You can rent a flat and live there and go to your job at certain times. If you have a car you can drive to the job. You can usually eat in nice restourants inside the military for very cheap prices. The longer version is much more comfortable.