 The Duke of Schomberg's son, Meinhardt, led this crossing, which a small force of Irish dragoons in picquet under Neil O'Neill unsuccessfully opposed.James, an inexperienced general, thought that he might be outflanked and sent a large part of his army, including his best French troops along with most of his artillery, to counter this move.What neither side had realised was that there was a deep, swampy ravine at Roughgrange.