The White House on Tuesday nominated Lt. Gen. David N. Miller Jr. to lead the U.S. Space Command as its general, according to a congressional notice.
Miller is currently the deputy chief of Space Operations, Strategy, Plans, Programs and Requirements. He will, if confirmed, take over Space Command after his predecessor, Gen. Stephen Whiting, steps down from command toward the end of the year or the beginning of the next.
“Congratulations to Lt. Gen. Miller on his nomination to serve as Commander, U.S. Space Command,” Chief of Space Operations Gen. Douglas Schiess said in a social media post. “He is an exceptional guardian who has represented our service with distinction, and we believe he is a strong candidate for this critical joint leadership role.”
Prior to his current post, Miller served as the commander of Space Operations Command at Peterson Space Force Base, Colorado. He also served as the special assistant to the vice chief of space operations at Peterson and has held roles commanding guardians and airmen at the squadron, group and wing levels at various bases.
If confirmed, Miller will become the fourth commander of SPACECOM since its reestablishment in 2019, at a time when U.S. leaders are increasingly emphasizing the role of space in operations and the nation’s defense.
The nomination comes on the heels of Secretary of the Air Force Troy Meink revealing that the department has on-orbit space control weapons capable of defending the joint force from “hostile adversary action.” Keeping details sparse, he declined to say what type of weapon it is and reasserted its necessity for deterrence.
Officials have touted space’s role in recent missions, such as Operation Epic Fury, calling its capability essential to the joint force.
“During Operation Epic Fury, our components, notably at U.S. Central Command and Space Command with support from components at European Command and Pacific Command, demonstrated that guardians are not supporting from the sidelines as a ‘nice to have,’ but we are delivering spacepower directly into the fight as a ‘need to have,’” Schiess said during his keynote at the mid-September Air & Space Forces Association’s 2026 Air, Space & Cyber Conference.
As commander, Miller will be responsible for the space domain while providing space-enabled combat effects across the world, bearing combat command authority over joint warfighters operating ground and space-based systems.
Miller would succeed Whiting, who has held the position since January 2024 after being nominated by former President Joe Biden the year prior and confirmed in December 2024.
Whiting previously served as commander of Space Operations Command and held numerous positions across U.S. Strategic Command, Air Force headquarters and the Office of the Deputy Secretary of Defense.
A formal confirmation hearing for Miller has yet to be set by the Senate Armed Services Committee.
Cristina Stassis is a reporter covering stories surrounding the defense industry, national security, military/veteran affairs and more. She previously worked as an editorial fellow for Defense News in 2024 where she assisted the newsroom in breaking news across Sightline Media Group.