Vocation : Military : Military career

Hector Quintanilla Jr. (May 7, 1923 – May 18, 1998) was a United States Air Force (USAF) Lieutenant Colonel, best known as the last chief officer of Project Blue Book, the USAF's official unidentified flying object investigative arm.

Étienne Bazeries (21 August 1846, in Port Vendres – 7 November 1931, in Noyon) was a French military cryptanalyst active between 1890 and the First World War. He is best known for developing the "Bazeries Cylinder", an improved version of Thomas Jefferson's cipher cylinder. It was later refined into the US Army M-94 cipher device. Historian David Kahn describes him as "the great pragmatist of cryptology. His theoretical contributions are negligible, but he was one of the greatest natural cryptanalysts the science has seen." (Kahn 1996, p244)
Bazeries was born in Port-Vendres, France, the son of a mounted policeman. In 1863 he enlisted in the army, and fought in the Franco-Prussian War, where he was taken prisoner, although he later managed to escape disguised as a bricklayer. In 1874 he was promoted to lieutenant, and sent to Algeria in 1875. He returned to France the following year and married Marie-Louise-Elodie Berthon, with whom he would father three daughters: Césarine, Fernande and Paule.
He apparently became interested in cryptography through solving cryptograms in newspapers' personal columns, and soon applied his cryptanalytic skills in a military context when, in 1890, he solved messages enciphered with the official French military transposition system, causing the War Ministry to change to a new scheme. In an effort to prompt reform within the government and enhance national security, Bazeries further exposed weaknesses in French cipher systems. In 1891, news of his talent had spread, and he began work for the Ministry of Foreign Affairs' Bureau du Chiffre. Bazeries continued his cryptanalytic work there even after he retired from the Army in 1899, assisting in solving German military ciphers during World War I. However, many of Bazeries recommendations to the government for improvements in official cipher systems met severe bureaucracy and rebuffs, which became a constant source of frustration for him in an otherwise illustrious career. He retired in 1924, aged 78.
In the 1890s he broke a famous nomenclator system called the "Great Cipher", created by the Rossignols in the 17th century. One of the messages referred to the famous Man in the Iron Mask and provided a possible solution to the mystery. His influential 1901 text Les Chiffres secrets dévoilés ("Secret ciphers unveiled") is considered a landmark in cryptographic literature.

Hans-Gustav Felber (July 8, 1889 – March 8, 1962) was a general in the Wehrmacht of Nazi Germany during World War II.

Heinz Pernet (5 September 1896 – 30 June 1973) was a German military officer and Erich Ludendorff's stepson. He was a top figure in the Beer Hall Putsch of November 1923. He was among the nine men tried and convicted along with Adolf Hitler and Erich Ludendorff in 1924. He later became an SA-Brigadeführer.

Hans Paul Oster (9 August 1887 – 9 April 1945) was a general in the Wehrmacht and a leading figure of the anti-Nazi German resistance from 1938 to 1943. As deputy head of the counter-espionage bureau in the Abwehr (German military intelligence), Oster was in a good position to conduct resistance operations under the guise of intelligence work.
He was involved in the Oster conspiracy of September 1938 and was arrested in 1943 on suspicion of helping Abwehr officers caught helping Jews to escape Germany. After the failed 1944 July Plot on Hitler's life, during interrogation, he named Admiral Wilhelm Canaris, the head of Abwehr, as the "spiritual founder of the Resistance Movement". The Gestapo arrested Canaris and eventually found his diaries, in which Oster's anti-Nazi activities were revealed. In April 1945, he was hanged with Canaris and Dietrich Bonhoeffer at Flossenbürg concentration camp.

Robert Johnson (Rocky) Spane (born May 5, 1940) was a vice admiral in the United States Navy. He was Commander, Naval Air Force Pacific from 1993 to 1996. Spane is a 1962 U.S. Naval Academy graduate.

Don Walsh (November 2, 1931 – November 12, 2023) was an American oceanographer, explorer and marine policy specialist. He and Jacques Piccard were aboard the bathyscaphe Trieste when it made a record maximum descent into the Challenger Deep on January 23, 1960, the deepest point of the world's oceans. The depth was measured at 35,813 feet (10,916 m), but later and more accurate measurements have measured it at 35,798 feet (10,911 m).