Alfred Michael Koch was born on 25 February 1894 in
Arosa,
Graubünden, Switzerland. He moved to Canada at the age of four years with his father John Koch. The younger Koch enlisted in the
19th Alberta Dragoons on 23 September 1914 at
Valcartier, Canada, and was assigned regimental number 2077. He listed a home address in
Edmonton, Alberta, Canada, his profession as law student, and claimed prior military experience. His physical examination reported him as 5 feet 3 1/2 inches tall. He reportedly has dark complexion, with dark brown hair, grey eyes, and moles on his right arm. == World War I ==