Great picture, thanks for posting. Took a second look.... today, I see 4 troopers, leading 5 horses and a mound of gear/tack. One man on the tiller and another poling! The water is within 6-8 inches of the gunnels.....not a safe situation! They are obviously upriver from their destination hoping that the oarsman can guide the boat to a safe landing on the opposite river bank. I wonder if the swimmers were supposed to cling to the sides of the boat and cross also? The Sergeant in the foreground holding a buggy whip, perhaps the boat was brought up using a wagon? Again, a great photo!