Soldiers won't get far without their rations. Military leaders have to figure out how they will feed their troops quickly and efficiently, often in adverse conditions. This has led to many ingenious solutions, including the MRE (Meal, Read to Eat), a small package that contains everything a soldier needs for a hot meal during combat or when other types of rations are impractical. An MRE provides about 1,200 calories in the form of a main course, side dish, dessert, drink, and more. It has a shelf life of approximately three years.