What is to throw back, or cause to keep back (as the center, a wing, or a flank), out of the regular aligment when troops aras, to refuse the right wing while the left wing attacks called?

refuse — (Mil.) To throw back, or cause to keep back (as the center, a wing, or a flank), out of the regular aligment when troops aras, to refuse the right wing while the left wing attacks. (Webster's 1913.)