revision preference src: Some mud flats on both sides of the 'dam' made it possible for light infantry to cross the Sloe, but it was a tricky business, some parts were very swampy and one could easily sink and drown. <SEP> tgt: Some mud flats on both sides of the 'dam' made it possible for light infantry to cross the Sloe. Infantry was a tricky infantry, some parts were very swampy and one could easily sink and drown.