What is the minimum age to join the army in your nation?

[Central Kadigan]

We have compulsory national service after the completion of secondary school (17- or 18-years old). The military is just one option. After completion of their service, some enter a trade or vocational program, some go to college, some go to university, and some just stay in their national service for longer than is required.

[Novo Wagondia]

16 year olds can register, with parental consent, for the Wagain Forward Service Institute (WFSI), a 2-year, Military-run academic commitment that focuses on preparing prospective officers for the Higher Military Institutes. 18 year olds can register for formal training or enroll in a Higher Military Institute, but no soldier can see active combat until they are 21 years of age (19 in wartime).

[Rolling Dead]

16. Two year service compulsory. Volunteer afterwards.

[Yaie]

16. Compulsory for 5 months.

[Fosvaret]

To join one of the branches of the military, you must be 18
14+ you can join various youth organisations
The army reserves are joinable from 16 and upwards

[Kalckalinkd]

Its basically like Israel.

[Schmiegelland]

To join one of the main branches, you must be 20.

To join a youth organization, you must be 10.

You can join the SpecialForzen at the age of 16 with parental consent.

[Mike the Progressive]

10.

[Tropical Isles]

minimum age is 21. maximum age is 60.

[Vjaarland]

All able bodied males are conscripted into the RVDF (Royal Vjaarland Defense Forces) at age 21.

[Imota]

In the Red Shadows universe, military service is compulsory. Technically, anyone above the age of 15 can be conscripted, but in general this is reserved for those who drop or flunk out of high school. Starting at age 18, all high school graduates are required to serve for four years in the Army, six years in the Navy or Air Force, or eight years in approved civilian service. Witches are conscripted at age 12 and required to serve for at least eight years. After completing service, all citizens are considered part of the reserves until age 40.

In the Koukyuu Unification universe, military service is completely voluntary at age 18. Those between the ages of 15 and 18 may join with parental permission, but may not be deployed in combat until turning 18. Witches are allowed to join starting at age 12, but may not be deployed in combat until turning 15. There is no maximum age for enrollment as long as the prospective serviceman is deemed fit to begin training, but for a practical matter, 45 is the unofficial cutoff age.

[Liliah Marksmen]

For commoners, at the age of ten you are thrown into combat. If you survive to be twelve, you can join for the rest of your life. At random, fifty kids are chosen to fight for life.
For townspeople you are taken into war at sixteen with a year of training and serve untill you're twenty. Then you can join for ten years
for nobles youcan join for however long you want with a year of training when you're twenty
The royal family can do whatever they want.

[Durkmoor]

You can join the Military at age 16 and the maximum age is 40

[Nordwalsh]

18 years of age during peacetime, up to 41 years.

During wartime, this is sometimes expanded by the Federal Assembly to 16 - 48.

[Jade Tigers]

In theory at least, every citizen is a member of the extended Jade Tiger's military however, in order to apply to join the National Military Service, one must have already passed both College Graduation Exams and Police Enrollment exams.

[Roskalia]

18 years old in Roskalia.

[Das Fruheste Reich]

In Das Fruheste Reich, the minimum age to join the armed forces is sixteen. Although, most soldiers are between the ages of eighteen and thirty-five, with a maximum enlistment age of forty.

[Britannia I]

For an active role is 17

But the official age is actually 12

[Espartius]

There is no such thing as a "minimum age" to join the Espartius Army; all holding Espartian citizenship also have membership in the army which comes with the citizenship. Everyone born to an Espartian father and mother is a citizen - and thus member of the army - of the nation upon birth.

[Baravia]

Anyone willing to join the army can join at age 18, but the age when you shall start being deployed is 22.

[Bodobol]

18.

[Dermastina]

Military training is considered compulsory education between the ages of 17-19, after which they are free to join if they wish.

Some more specialized branches require an extra year of training, and the Royal Order of Assassins requires two additional years; however, in many cases the first year is taken in addition to their last year of schooling, as they are recruited earlier.

[The Sivent Isles]

From the age of 16 all citizens are required to serve at least 5 years in compulsory service (they must do this before their 35th birthday).

[Equalium]

You may join the army at 9, and gain benefits when you turn 14. You will be provided mandatory education until the age of 16.

[Galactic Terran Empire]

One may join the army at 15, but one is required to join a branch of the imperial military by age 18