You comments on crackers struck a chord in me. I was never in the military, but as a youth Boy Scout, we used to get hiking rations for backpacking. Remember, this was before freeze-dried and MREs. Two staples that appeared in every meal were peanut butter and "bolton" biscuits. Bolton biscuits were thick, unleven crackers that were more suitable for bathroom tiles than for eating. On one lunch break, several scouts started to throw them at each other (boys will be boys). Our Scoutmaster put a stop to it. Some may think it was solely because they were exhibiting behavior unbecoming to a scout. I personally think he was worried they might inflict sever injuries upon each other with the "Mini bricks."