go into action

    • 暴動鎮圧のため軍隊が出動した
    • The army 「was dispatched [went into action] to crush the riot.
    • 警官を出動させるほどのことはない
    • It's not serious enough to justify calling out [in] the police.
    • 軍隊に出動準備の指令が出された
    • The troops were alerted [put on alert].