In 1936 Leo Meyer joined the New York National Guard 102nd Engineer Regimental Field Music as a bandsman through the NYNG Cadet Corps. In October 1937 he enlisted into Company ‘B’, 102nd Engineer Regiment and by May 1940 he had been promoted to corporal. In October 1940 he was called, with his unit, the 27th Division, to federal service for 12 months training. From December 1941 to December 1942 Meyer served in the Pacific Theater of Operations as a master sergeant in the positions of Regimental and Battalion Sergeant Major. In March 1943 he graduated from the US Army Air Forces Officer Candidate School. In 1944 he volunteered for service in the infantry and in June 1945 was serving as a lieutenant in Company ‘A’, 34th Infantry, 24th Infantry Division in the Philippines. Meyer earned his first Combat Infantryman Badge during Operation VICTOR V in the Southern Philippines Campaign.
After serving in occupied Japan as a captain he mustered out of the Army of the United States and reenlisted in the Army Organized Reserve Corps; by June 1947 he was back on active duty as a Regular Army master sergeant instructing reservists. He re-entered active commissioned service as a 1st Lieutenant and served in the 7th Infantry, 3rd Infantry Division at Fort Devens. By November 1950 he was in Korea north of the 38th parallel serving under LTC Thomas O'Neill in 3rd Battalion, which served as the nucleus of "Task Force Dog", the forward element of the covering force for the X Corps’ withdrawal from the Chosin Reservoir. He earned his second Combat Infantryman Badge during the Chinese Communist Forces (CCF) Intervention Campaign (Nov 1950 to Jan 1951).
Meyer later served in the Cold War Army as an advisor to the Massachusetts National Guard, a staff officer in Bad Kreuznach, Germany, an operations officer at the Army Disciplinary Barracks in New Cumberland, Pennsylvania and as a Post staff officer at Fort Dix, New Jersey. 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, NY, Camden, NJ, Honolulu, HI and Washington, D.C.. In 1967 he received his Bachelor of Science Degree in Military Science from the University of Maryland and the following year he volunteered again for service in a combat zone. At age 51 he was assigned to 5th Special Forces Group (Airborne), 1st Special Forces, in Nha Trang, Vietnam, where he earned his Jump Wings. 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). In March 1969 he was promoted to colonel in the Army Reserve but continued serving as a military intelligence Regular Army CWO4 on active duty.
From 1969 to 1971 Meyer was again assigned in the Washington, D.C. area as an intelligence technician with the 116th Military Intelligence Group. He retired as a colonel in 1971. Meyer was buried at Arlington National Cemetery on 18 May 2006.
Colonel Meyer was posthumously inducted into the U.S. Army Officer Candidate School Hall of Fame on March 27, 2009. He is the 2,480th officer so honored.
Combat Infantryman Badge (CIB) 3rd award; Soldier's Medal; Bronze Star Medal 3rd award; Purple Heart 2nd award; Meritorious Service Medal; Air Medal; Joint Services Commendation Medal; Army Commendation Medal 3rd award; Navy Commendation Medal w/combat V; Good Conduct Medal; American Defense Service Medal; American Campaign Medal; Asiatic-Pacific Campaign Medal w/3Battle Stars; World War II Victory Medal; Army of Occupation Medal (Japan); National Defense Service Medal 2nd award; Korean Service Medal w/4 Battle Stars; Vietnam Service Medal w/3 Battle Stars; Armed Forces Reserve Medal w/Gold Hour Glass (3rd award); Vietnamese Cross of Gallantry Medal w/Bronze Star; Philippine Liberation Ribbon w/Bronze Service Star; United Nations Service Medal; Vietnam Campaign Medal; Republic of Korea War Service Medal; U.S. Parachutist Badge; Vietnamese Special Forces Parachutist Badge; Distinguished Unit Citation for the battle of SEGOK (unit award); Meritorious Unit Commendation (unit award); Philippine Presidential Unit Citation (unit award); Republic of Korea Presidential Unit Citation (unit award); Vietnam Cross of Gallantry w/Palm (unit award); Vietnam Civil Actions Medal 1st Class (unit award)
In 1953 while assigned in Massachusetts, Meyer met Dr. Ralph Bussler, an osteopathic doctor who had established a business making 54mm lead figures, "Tin soldiers" (soldiers, horses, and weapons) for collectors and war game enthusiasts. He learned how to create and cast the figures and contributed to the Bussler line of civil war sets. Bussler and Meyer figures are featured in the book Making And Collecting Military Miniatures by Bob Bard.
In 1964 while assigned in Honolulu, Meyer learned the art of the American whaler, Scrimshaw (carving on whale ivory) from Richard (Dick) Hull. He carved larger sperm whale teeth with eagles' heads or traditional scenes of ships and whales and smaller pieces for jewelry. 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. Some of his scrimshaw art is exhibited in the book Scrimshaw: Variations on a Theme by Martha Bowen