How to Say "air force" in Spanish
The Spanish word for “air force” is “aviación” — B1 level.

Examples
La aviación ha progresado mucho en el último siglo.
Aviation has progressed a lot in the last century.
Ella quiere estudiar una carrera en la aviación civil.
She wants to study for a career in civil aviation.
Mi abuelo trabajó muchos años en la aviación.
My grandfather worked for many years in aviation.
The '-ción' Gender Rule
In Spanish, almost every word that ends in '-ción' is feminine. This means you should always use 'la' or 'una' with 'aviación'.
The disappearing accent mark
When you make this word plural ('aviaciones'), the accent mark on the 'o' disappears because the emphasis naturally stays on the same syllable.
Using the wrong gender
Mistake: “el aviación”
Correction: la aviación (because words ending in -ción are feminine).
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