A person with diabetes cannot enter any branch of the US military including the Coast Guard. It is sometimes possible to join the Coast Guard Auxiliary with diabetes.
No you cannot. You automatically get disqualified.
17 with a waiver
A person can still join the military with hepatitis C. However, this may not always work out the way that the person wants it to. You can be denied.
Best to ask a military recruiter.......................
Join the Peace Corps or military.
No, those currently on parole may not join the military. Few if any who have been on parole may serve their country by enlisting.
Not in combat roles.
No, to join any branch of the United States Military you must be a citizen of the US.