How to Say "to enlist" in Spanish
The most common Spanish word for “to enlist” is “unirse” — use 'unirse' when referring to joining a group, organization, or cause, including military service, emphasizing the act of becoming part of something larger..
unirse
/oo-NEER-seh//uˈniɾse/

Examples
Muchos jóvenes decidieron unirse al ejército después de la crisis.
Many young people decided to enlist in the army after the crisis.
¿Quieres unirte a nuestro grupo de estudio?
Do you want to join our study group?
Me uní al equipo el mes pasado.
I joined the team last month.
The Reflexive 'Se'
Because 'unir' (to unite something else) becomes 'unirse' (to unite oneself), you must include the little pronoun (me, te, se, nos, os) that matches the subject doing the action.
Using 'A' after Unirse
When you join something, you almost always use the preposition 'a' (to/at) right after the verb: 'Me uno al club' (I join the club). Remember 'al' is the short form of 'a el'.
Forgetting the Reflexive Pronoun
Mistake: “Yo uno el grupo.”
Correction: Yo *me uno* al grupo. ('Yo uno' means 'I unite something else,' not 'I join.')
meterse
meh-TEHR-seh/meˈteɾ.se/

Examples
Tras graduarse, se metió en la policía nacional.
After graduating, he enlisted in the national police.
Después de la universidad, se metió a periodista.
After university, he became a journalist.
Ella se metió en política para cambiar las cosas.
She got into politics to change things.
Focus on Commitment
This usage emphasizes the act of committing or immersing oneself fully into a specific role, career, or lifestyle.
Choosing Between 'Unirse' and 'Meterse'
Related Translations
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