This is the 6995th most frequent Spanish word.
efectivos
"Efecivos" can mean "cash" (money in physical form) or "troops/personnel" depending on context.
The word 'efectivos' is used as an adjective here, meaning 'effective', to describe the performance of the firefighters in their task.
Los bomberos fueron muy efectivos en apagar el incendio.
The firefighters were very effective in extinguishing the fire.
In this sentence, 'efectivos' refers to personnel or forces, in this case, police officers available for the operation.
Necesitamos reunir todos los efectivos policiales disponibles para esta operación.
We need to gather all the available police forces for this operation.
Here, 'efectivos' is used in its plural form to mean 'cash', referring to physical money instead of electronic transactions.