Kitchener's Mob: The Adventures of an American in the British Army

According to Wikipedia: "According to Wikipedia: "James Norman Hall (April 22, 1887 – July 5, 1951) was an American author best known for the novel Mutiny on the Bounty with co-author Charles Nordhoff... Hall was on vacation in the United Kingdom in the summer of 1914, when World War I began. Posing as a Canadian, he enlisted in the British Army, serving in the Royal Fusiliers as a machine gunner during the Battle of Loos. He was discharged after his true nationality was discovered, and he returned to the United States and wrote his first book, Kitchener's Mob (1916), recounting his wartime experiences."