How to Say "formations" in Spanish
The Spanish word for “formations” is “líneas” — A2 level. This is a very common word in everyday Spanish.
English → SpanishA2
nounA2
military or organized groups

Examples
Había largas líneas para comprar las entradas del concierto.
There were long lines (queues) to buy the concert tickets.
Los soldados mantuvieron sus líneas durante el ejercicio.
The soldiers maintained their formations during the exercise.
Regional Differences for 'Queue'
While 'líneas' is understood, many Spanish speakers prefer 'colas' (Spain) or 'filas' (Latin America) when specifically talking about a queue of people.
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