Jack Armstrong was Killed in Action during World War II.
Biography
MM2C, United States Navy WORLD WAR II
Sources
"United States Census, 1930," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/X38F-48L : accessed 7 February 2015), Jack E Armstrong in household of John E Armstrong, Austin, Mower, Minnesota, United States; citing enumeration district (ED) 0009, sheet 8B, family 179, line 81, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 1108; FHL microfilm 2,340,843.