The Apollo Soyuz mission was a historic event that took place in July 1975, symbolizing cooperation between the United States and the Soviet Union during the Cold War. The crew consisted of three American astronauts: Thomas P. Stafford, Vance D. Brand, and Donald K. "Deke" Slayton. Stafford served as the mission commander, while Brand piloted the command module, and Slayton operated the docking module. The Soviet crew comprised of two cosmonauts: Alexey Leonov, the first person to conduct a spacewalk, and Valeri Kubasov, an experienced cosmonaut. Together, these five individuals successfully achieved the first-ever international docking in space, marking a significant milestone in the history of space exploration.