Joseph Finnegan was a United States Navy linguist and cryptanalyst with Station Hypo during the Second World War.

Alva Bryan "Red" Lasswell was a United States Marine Corps linguist and cryptanalyst during World War II. In 1942, he contributed to the identification of Midway Atoll as the Japanese military target codenamed AF. In April 1943, Lasswell helped decrypt the coded itinerary of Admiral Isoroku Yamamoto, leading to his interception by Army Air Forces fighter planes near Rabaul.