how old do you have to be to be in the space force?
Marine Corps Age Limit: 29 for active duty and Marine Corps Reserve. Air Force Age Limit: 39 for active duty and Guard, 38 for Air Force Reserve. Coast Guard Age Limit: 27 for active duty, 39 for Coast Guard Reserve. Space Force Age Limit: Contact an Air Force recruiter for eligibility requirements (1-800-423-8723)