“The nature of warfare is changing; it spans an unprecedented theater that stretches from the heavens to cyberspace and far into the oceans' depths.”

American retired army general and defense official

Lloyd James Austin III is a retired United States Army general and American defense official. He served as the 28th United States secretary of defense from 2021 to 2025 in the Biden administration. Austin spent much of his career in the U.S. Army before taking on one of the country’s highest civilian defense posts. He is known for leading the Pentagon during a period of major national security challenges and for public remarks shaped by military service, defense policy, and the responsibilities of command.