Joining the military is a major commitment. Before you enlist, take the time to learn about the different branches, available careers, training requirements, and obligations that come with military service.
One of the most important decisions you can make is choosing what you want to do in the military. Don't leave that decision entirely to someone else.
Research Your Military Career Options
The Army, Marine Corps, Navy, Air Force, Space Force, and Coast Guard have different missions and career opportunities.
Some occupations are available in several branches. Others are specific to one service.
Before talking to a recruiter, consider:
- Which career fields interest you?
- Which military branches offer those occupations?
- What education, medical, physical, or security requirements apply?
- What training will you receive?
- How long is the required service commitment?
- Will the training and experience support your long-term career goals?
Research several options. A job that sounds exciting may involve duties and working conditions you haven't considered.
Prepare for the ASVAB
The Armed Services Vocational Aptitude Battery (ASVAB) helps determine qualifications for military occupations.
Your AFQT score is primarily used for enlistment eligibility. Other ASVAB composite or line scores help determine which military jobs you may qualify for.
Higher scores can expand your options, but job availability and additional qualifications also matter.
Study before taking the ASVAB. Don't assume you can simply retake the test immediately if you are unhappy with your results.
Start with our ASVAB Practice Tests & Study Guide.
Talk to Recruiters From More Than One Branch
A recruiter can explain eligibility requirements, enlistment procedures, available jobs, and service benefits.
However, you should make your own comparisons rather than assuming the first opportunity presented is your best option.
Ask specific questions. Write down the answers. Verify important claims using official military resources.
Our Military Recruiters Guide includes questions to ask before making a commitment.
Understand Your Enlistment Agreement
Military enlistment involves formal documents and service obligations.
DD Form 4 and applicable annexes or additional agreements may describe your enlistment terms, options, and commitments.
Some applicants enter a Delayed Entry Program before leaving for initial training. The procedures and consequences of withdrawing or changing plans depend on the circumstances and service program.
Do not assume that you can cancel any agreement without consequences or that a verbal promise guarantees a particular job.
Before signing, review the documents carefully and ask for clarification about anything you don't understand.
Understand What Military Life Involves
Military service is more than a job title. Depending on your branch and assignment, you may face long working hours, field exercises, deployments, changes of duty station, or extended periods away from home.
You should understand the differences between active duty, Reserve, and National Guard service, including their respective obligations.
Consider how military service could affect your education, family responsibilities, finances, and long-term plans.
Prepare Before Basic Training
Once you have decided on a branch and understand your enlistment terms, begin preparing for initial military training.
Learn your service's current physical fitness requirements, follow the official packing list, and develop healthy training habits.
Read our Military Basic Training Guide and Physical Fitness Preparation Guide.
Before You Enlist: Final Checklist
- Compare branches and military occupations.
- Research the requirements for jobs that interest you.
- Prepare for the ASVAB.
- Discuss your options with recruiters.
- Understand your service commitment.
- Review enlistment documents and written conditions.
- Ask about bonuses, training, and job availability.
- Prepare physically and mentally for initial training.
- Make your decision based on verified information.
Final Advice
Joining the military can open doors to new skills, experiences, and career opportunities. It also involves serious responsibilities.
Know what you're signing up for. Research your options, ask questions, and take responsibility for your decision.
For a lighter look at military life, read our separate collection of Murphy's Laws of Combat.
Originally published September 2013. Updated October 2026. Military enlistment requirements and procedures may change. Verify current information with official military representatives.