Most answers to questions about a military service branch can be found by clicking one of the links below. In addition, each service also offers a “Contact Us” page which can be accessed via the Frequently Asked Questions, or FAQ page.
Army: https://www.army.mil/faq/
Army National Guard: https://www.nationalguard.com/guard-faqs
Navy: https://www.navy.mil/Resources/Frequently-Asked-Questions/
Air Force: https://www.af.mil/Questions.aspx
Space Force: https://www.spaceforce.mil/About-Us/FAQs/
Air National Guard: https://www.ang.af.mil/Contact/Questions.aspx
Marine Corps: https://www.marines.mil/FAQ/
Coast Guard: https://www.gocoastguard.com/faq