make this paragraph more coherent.
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.
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.