MarcV-Readers;
A good question; with many answers. I, too, am ex-military and Never stick my hands in my pockets, kilt or nay. As to what to do with your hands, some advice from Experience. 1st watch a video(or whatever they are now called ) of a good, Broadway production, then watch the actors and how they use their hands.( I have several years of theater work to my resume) And, if you are a tad broken down, or more 'kilt fashionable' carry a Cromach(Scots walking stick). It is a great way to keep your hands 'busy',with out the 'silent signals' of 'arms over chest, ect. Plus it is good to 'repel boarders', repel dogs, and move a product off the back of the top shelf of the grocery store!
CSA