Anyone who has served in the Army or Marines in a light infantry unit, Special Forces unit can talk authoritatively about camping light. Once you pack all of the mission essential gear and team gear, you have little room left food, water and comfort. We usually ended up carrying about one meal a day and had to procure water as we went. As for comfort, it was a poncho, poncho liner, canteen cup, knife or two, 550 cord (parachute cord) and 100 mph tape (green duct tape). If it was really cold, you could carry a sleeping bag. The only toiletry item was usually a small travel toothbrush in your pocket. There was never any smoking allowed in tactical situations, so most guys dipped snuff; that became like gold for trading.