There are things we say today that come from military or war sayings and now most people dont know the original meaning. Things like the saying the whole 9 yards We noe use it to say something is done all the way. It originaly was the amount of coed a musketeer carried. There fore using up the whole 9 yards meant he had done his duty all the way.

Heres another deadline This comes from the civil war. When they caputured prisoners they would draw a line in the dirt and say anyone who crosses it will be shot. Reporters started to use it as a line drawn in time that they had to get their stories in or their would be shot by their editors.

The term square meal came from the square plates used on sailing ships.