Regroupaient
Regroupaient is the imperfect indicative third-person plural form of the French verb regrouper, meaning they regrouped or they were regrouping. It is used to describe an action in the past that was ongoing, repeated, or habitual, rather than a completed single event.
Etymology and meaning: regrouper comes from the prefix re- meaning again or back, combined with groupe (group).
Conjugation and usage: In the imperfect tense, the full paradigm is je regroupais, tu regroupais, il regroupait,
Examples: In historical or military writing, one might encounter: Les troupes regroupaient leurs rangs après l’attaque.
See also: regrouper, se regrouper, regroupement. Note that regroupement denotes the action or result of regrouping