Complex sentence: With so many men sick it became common to see one man in charge of eight horses and as a result of giving the horses newly threshed barley, 15 deaths and 160 cases of serious illness were caused to horses in Chaytor's Force.
Split into simpler sentences: With so many men sick it became common to see one man in charge of eight horses. At this time, as a result of giving the horses newly threshed barley, 15 deaths and 160 cases of serious illness were suffered by horses in Chaytor's Force.