More difficult to supervise were men frequenting the Holy Ground, the notorious red-light district near the Hudson River where up to five hundred prostitutes congregated nightly on land owned by Trinity Church. Venereal disease raced through several regiments, threatening to thin their ranks before the enemy arrived. As William Tudor of Boston wrote home, “Every brutal gratification can be so easily indulged in this place that the army will be debauched here in a month more than in twelve at Cambridge.”