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"Las guerrillas" is a form of "guerrilla", a noun which is often translated as "guerrillas". "Los" is a definite article which is often translated as "the". Learn more about the difference between "las guerrillas" and "los" below.
la guerrilla(
geh
-
rree
-
yah
)A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
a. guerrillas
La guerrilla anunció su desarme total a través de un comunicado.The guerrillas announced their complete disarmament by means of a press release.
b. guerrilla force
Escuché en la radio que la guerrilla negoció un alto el fuego con el gobierno.I heard on the radio that the guerrilla force had negotiated a ceasefire with the government.
2. (military)
a. guerrilla warfare
El guía nos dijo que tuviéramos cuidado porque hay zonas de guerrilla por aquí.The guide told us to be careful, because there are areas of guerrilla warfare nearby.
los(
lohs
)A definite article is a word that identifies a noun as specific or known to the speaker (e.g., the girl).
A pronoun is a word that stands in for a noun (e.g., she).