He could have asked John Knox, he was a bookseller after all. John Knox was a book-learned general in the Revolutionary War after all, he took Fort Ticonderoga and brought its cannons down to Boston to lay seige on the British who were holding that place, and John Knox who never attended a military academy later became the Secretary of War in the Washington Administration. Alot of people who fought on the Rebel side in the American Revolution are amatuers and the British looked down their noses at them at their own peril!
I believe you mean General Henry Knox; and when/how does young Napoleon develop a relationship with him?
Regardless, as to your OP. Napoleon is too young to have played any part in the ARW - unless as a 7/8 year old he were to throw a snowball at a British soldier and touch off an event such as the Boston "massacre".