In 1915 I was a physician with the rank of First Lieutenant in a Canadian regiment in Flanders, one of many Americans to precede the government itself into the gigantic struggle. I had not entered the army on my own initiative, but rather as a natural result of the enlistment of the man whose indispensable assistant I was—the celebrated Boston surgical specialist, Dr. Herbert West. Dr. West had been avid for a chance to serve as surgeon in a great war, and when the chance had come he carried me with him almost against my will. There were reasons why I would have been glad to let the war separate us; reasons why I found the practice of medicine and the companionship of West more and more irritating; but when he had gone to Ottawa and through a colleague’s influence secured a medical commission as Major, I could not resist the imperious persuasion of one determined that I should accompany him in my usual capacity.