Cpl Morten J. Sivebak was one of the more than 30,000 Danish-Americans who were mobilized during the Second World War. He served in the Army Air Force.
Morten Johannes Tscherning Sivebak (Sivebæk) was born on 14 September 1904 in Kolding. He was the son of solicitor Thomas Tscherning Sivebæk and Kirstine Katrine Sivebæk (née Jensen).
Sivebak emigrated to the United States in 1926 arriving in New York on 24 August 1926 on-board the SS Hellig Olav.
By the early 1940s he was working as a waiter in the Childs Restaurants near Times Square in New York. Childs Restaurants was one of the first chain dining restaurants in the USA.
Sivebak enlisted in the U.S. Army on 2 September 1942 in Fort Jay Governors Island, New York.
He was naturalised on 9 February 1943. At the time he was a corporal (32443770) in the Medical Detachment at the Advanced Flying School at Marianna Air Field in Florida.
 DNA: Parish register, Kolding Sankt Nikolaj Sogn.
 Ancestry: New York Passenger Lists, 1820-1957.
 Wikipedia: Childs Restautants, https://en.wikipedia.org/wiki/Childs_Restaurants#Notable_locations (accessed on 10 April 2020).
 Ancestry: U.S., World War II Army Enlistment Records, 1938-1946.
 Ancestry: Florida, Naturalization Records, 1847-1995.