I think that if the sentence was they get paid ( as a verb) every alternate week it would be definitely a passive voice. Do not forget that the passive forms are made up of the verb be with a past participle.<span>
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Change Passive Voice to Active Voice
Active voice is used when the subject performs the action stated by the verb. For example: Tom changed the flat tire.
Passive voice is used when the subject is acted upon by the verb. For example: The tire was changed by Tom.
I would say warriors as common noun refers to a concept to a particular individual .