You can no longer join the military when you hit the maximum enlistment age, which varies by branch but generally falls between the late 20s (Marine Corps) and mid-40s (Air Force, Space Force), with federal law setting a hard limit around 42 for enlistment, though waivers are sometimes possible, especially for prior service, with 42 being cited as a general cap for enlistment in the US military, with specific service caps varying and waivers available.
As a general rule, you can join the ADF if you are between 3 and 6 years away from the Compulsory Retiring Age for a specific role.
Age limits
Air Force: 17 - 42. Army: 17 - 35. Coast Guard: 17 - 41. Marine Corps: 17 - 28.
Section 59 of the Defence Act outlines who is liable to serve in the defence force during times of war: all people aged between 18 and 60 years old who have lived in Australia for more than six months. Specific exemptions for health, professional, religious or conscientious reasons are outlined in Section 61A.
Federal Law & Military Age Limits
Federal law sets a uniform maximum age limit for military enlistment at 42 across all branches. While this provides a baseline, individual branches retain the authority to define their own age limits, both minimum and maximum.
In general, the Defense Department restricts enlistment to those 35 and younger. Prior enlisted service members can subtract their previous years of service from their age in order to extend eligibility. For example, the Air Force has a maximum age of 39 for reenlistment.
Regular rejoiners can start the application process as long as they enlist before their 57th birthday. What if I was Medically Non-Deployable? If you were medically discharged your details will be reviewed and treated on a case by case basis.
There is little chance, 60 years later, of conscription being again introduced in Australia, and this article does not advocate for it. But the difficulties Army faced in implementing the scheme are indicative of the problems even a very limited mobilisation would be likely to cause.
Can I join the Army if I'm older than the maximum age requirement? The maximum age to join the Army as an enlisted Soldier is 34, while Officers must accept their commission before age 31. However, the Army can lift some restrictions based on the need for certain roles to be filled.
How much does Australian Army in Australia pay? The average Australian Army salary ranges from approximately $58,604 per year for Truck Driver to $100,126 per year for Psychologist. Salary estimated from 1,843 past and present job postings on Indeed.
Certain medical conditions — such as asthma, diabetes, severe allergies, certain types of mental health disorders and heart problems — can disqualify individuals from joining the military due to the physical and mental demands of service.
Transition to civilian life
You may transition from the Permanent Forces or Reserves to civilian life if you are: at compulsory retirement age (60 years old for members of the Permanent Forces and 65 years old for members of the Reserves) no longer medically fit to serve.
Yes, getting into the Australian Defence Force (ADF) is challenging due to strict physical, psychological, and aptitude standards, with a rigorous, lengthy selection process that weeds out many applicants, though requirements have slightly adjusted to boost recruitment. You need strong performance in cognitive tests (like ADF YOU), interviews, and fitness assessments, plus must meet medical/security criteria, making thorough preparation essential.
Surprisingly, yes, there is such a thing as being 'too old' to enlist in the military. Federal law states that the maximum age for any recruit is 42 years old; however, each branch of the U.S. Armed Forces has its own specific guidelines.
Soldier pay
Private: £63.27 per day. Lance Corporal: £81.89 per day. Corporal: £95.06 per day. Sergeant: £106.73 per day.
What does it take to join the Army National Guard?
You can have any hair length if it is worn up, but it cannot be longer than six inches from the top of the collar while in a braid or ponytail. If worn down, your hair should not extend beyond the lower edge of your collar when standing up straight in uniform.
New enlistments sign up for a Military Service Obligation (MSO). Contracts may vary from two to six years of service in active duty, Army Reserve, or Army National Guard.
Men who wished to avoid national service could join the Citizen Military Forces and serve only inside Australia, claim a student deferment or attempt a conscientious objection application.
Military exemption courts
As of 2025, martial law has never been declared since federation in 1901.
Below are the general age requirements for each branch:
Salary of Soldiers (JCOs/ORs)
Sepoy: ₹21,700 – ₹69,100. Naik: ₹25,500 – ₹81,100. Havaldar: ₹29,200 – ₹92,300. Naib Subedar: ₹35,400 – ₹1,12,400.
In fiscal year 2025, the military's recruiting efforts returned to levels not seen in more than a decade. "Since November 2024, our military has seen its highest recruiting percentage of mission achieved in more than 15 years," stated Chief Pentagon Spokesman Sean Parnell.