"No not a grammar lesson, grammar does not enter into it, but rather a comment on the poor use of English"
Grammar is the proper use of a given language. I agree with adb and mullet. Start a grammatical thread, this one is about what is commonly known in military circles as "cyclical rate of fire".
I don't have a dozen matched arrows to futz with, and did my best with the six I do have and a 50# osage flatbow. Could barely get them all off in 60 seconds the first few tries, but had them down to about 45 seconds after a dozen or so rounds. Plenty of rest between rounds while I searched the hillside for stragglers even though the double hay bale target at 15 yds!!!! Unless they are particularly large soldiers and mighty close and slow moving they have little to fear from me.