I am researching about the American War of Independence, and starting to research for a project of mine. One thing I have been wondering about is PTSD in the American Revolution. I mean, we have accounts of it dating back to Marathon, so there has to be evidence of it in this war. I am focusing more on accounts in camp and on the front, but post-war will also be of help.
I recently picked up the audio book of Atkinson's The British Are Coming. It is the first part of a trilogy on the military history of the revolution. There are a number of officers and enlisted accounts that he includes from the Canadian campaign, Breed's Hill, Charleston, and others that discuss the horrors of the war. I would mine those sources and see if you can find where the originals are. Some of the accounts are from diaries immediately after, but I seem to remember that a few appeared to be accounts written years after. It was still a fresh memory for many of them.