[W]hen there was a daungerous rebellion againſt King William Rufus and Rocheſter Caſtle then the moſt important & ſtrongeſt fort of this Realm was ſtowtly kept againſt him, after that he had but proclaimed that his ſubjects ſhould repaire thither to his Campe, vpon no other penaltie, but that whoſoeuer refuſed to come, ſhould be reputed a Niding: they ſwarmed to him immediatly from all ſides in ſuch numbers, that he had in a few daies an infinite Armie, and the rebells therewith weere ſo terrified, that they forthwith yeelded.
Source: wiktionary