for the twentieth time in a week , jamie patiently rehearsed the number of troops available , the structure of command-insofar as one existed-the armament on hand and its condition-mostly poor-the prospects of charles being joined by lord lewis gordon or the farquharsons , what glengarry had said following prestonpans , what cameron knew or deduced of the movement of english troops , why charles had decided to march south , and so on and so forth .