пускать в дело

(что)

put smth. into service; bring smth. into play; send (e.g. troops) into action; press smth. into service

Надо бы и ему спокойно подъехать к стану, спокойно поговорить..., а он наорал на всех, и был момент, когда за малым не пустил в дело плеть. (М. Шолохов, Поднятая целина) — He ought to have ridden quietly up to the camp, had a quiet chat with the people... but instead he had shouted at them all, and at one moment he had nearly brought his whip into play.

Полк Фомина шёл в резерве и не был пущен в дело за отсутствием в том нужды. (А. Платонов, Афродита) — Fomin's regiment had been consigned to the reserves and was not sent into action as the need did not arise.

Всё казалось очень лёгким: мотор создан, надо скорее ставить его на рабочее место, потом быстро изготовлять ещё сотни таких же и пускать в дело. (А. Бек, Жизнь Бережкова) — It looked simple enough: you had an engine built, it had to be installed in its place as quickly as possible, and then hundreds of others like it were to be manufactured and put into service.