give the word of command

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References in classic literature ?
Osborne, my dear; and as for my Mick, I often tell him he should never open his mouth but to give the word of command, or to put meat and drink into it.
they named captains and officers to draw us all up, and give the word of command, in case of an attack, and give every one their turn of command; nor was this forming us into order any more than what we afterwards found needful on the way.