This system, using havercake carried in a haversack, was also used widely by the military for the individual soldier to carry his rations.
en.wikipedia.org Often, while on field campaigns, soldiers found themselves saving some portions of food in their haversacks, washable canvas bags that provided storage but did little for food preservation.
en.wikipedia.org He pedals his feet uselessly in the slickness of grief, eats strange meals at odd intervals, carries around a deflated haversack, tosses letters into the ocean.
www.npr.org I crawled along the trench, which, by now, was only 2ft 6in high, collecting food, water and ammunition from dead men's pouches and haversacks.
www.derbytelegraph.co.uk The advantage of the handy haversack is that any item placed inside will be handy, that is, located on top when intentionally sought.
en.wikipedia.org