[4] In 1936 Leo Meyer joined the New York National Guard 102nd Engineer Regimental Field Music as a bandsman through the NYNG Cadet Corps.

He earned his second Combat Infantryman Badge during the Chinese Communist Forces (CCF) Intervention Campaign (November 1950 to January 1951).

In 1961 Meyer, a reserve infantry major on the active duty list, reverted to Regular Army warrant officer (CWO4) (in lieu of retiring from the Army) and was assigned as an intelligence technician in the Counter Intelligence Corps, serving in New York City, New York, Camden, New Jersey, Honolulu, Hawaii, and Washington, D.C.

[5][6][7][8][9] Meyer earned his 3rd Combat Infantryman Badge while serving in the Rung Sat Special Zone with the 5th Mobile Strike Force, B55 (December 68 to February 69).

[13] In 1964 while assigned in Honolulu, Meyer learned the art of the American whaler, Scrimshaw (carving on whale ivory) from Richard (Dick) Hull.

During his first assignment in Washington, DC, his art was on exhibit in the Fort Lesley J. McNair Post Library and he participated in the first Smithsonian Institution Festival of American Folklife, July 1967 as a scrimshaw artist.