upon the army's schedule

from Thomas Pynchon, Mason & Dixon (1997)

Long before the Soldiers came in sight, people in their Path could hear the drums, upon fitfully directed Winds, clattering off the walls of old quarries where Weld flower'd in glows of orange, yellow, and green, raking the hillside pastures all but empty, with the lambs just sold and the breeding ewes resting up for winter, their cull'd sisters off to auctions and fates less ritual, whilst the rams were soon to go up to spend winter in the hills. Vast flights of starlings, fleeing the racket, beat across the sky at high speed, like Squall-clouds,-- Evening at Noon-tide. In the little one-street villages, women stood among the laundry they'd just put out, looking at the Light, reckoning drying time and marching time, and Cloud-speed, and how wet ev'rything might be when they'd have to bring it in again. Soon the mercilessly even drumbeat fill'd the Day, replacing the accustom'd rhythms of country People with the controlling Pulse of military Clock-time, announcing that all event would now occur at the army's Pleasure, upon the army's schedule.