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ABOUT SPACE FORCES-JAPAN

 Space Forces Japan emblem 

The U.S. Space Force activated its sixth service component, United States Space Forces – Japan (USSPACEFOR-JPN) at Yokota Air Base, Japan, 4 December 2024. USSPACEFOR-JPN presents forces and space expertise under U.S. Space Forces Indo-Pacific (HQ USSPACEFOR-INDOPAC) in direct support of U.S. Forces Japan (USFJ).

U.S. Space Forces–Japan ensures space forces can plan, integrate, coordinate, and execute efforts in Japan on behalf of USSPACEFOR-INDOPAC to best support U.S. partnership agreements with Japan, deepen integration with Japanese space counterparts, and meet dynamic regional challenges to ensure a free and open Indo-Pacific.

The establishment of USSPACEFOR-JPN reinforces defense leaders’ commitments at the July 2024 Security Consultive Committee “2+2” to strengthen bilateral coordination on cross-domain operations, including cyber, space, and electromagnetic warfare (EW), recognizing the importance of all these domains to future concepts of deterrence and response capabilities, strengthening the alliance in a critical growth area for Japan.

 

U.S. Space Forces Japan News

USSF INDOPACOM Brig. Gen. Mastalir visits Okinawa

  • Published
  • By Airman 1st Class Arnet Tamayo

U.S. Space Force Brig. Gen. Anthony Mastalir, U.S. Space Forces Indo-Pacific commander, visited counterparts across various organizations in Okinawa, Japan, May 14, 2025, to ensure USSF assets and Guardians were postured to support U.S. joint partners. 

As the Theater Joint Forces Space Component Commander, and senior U.S. Guardian in the USINDOPACOM area of responsibility, Brig. Gen Mastalir’s trip was critical in optimizing space power with our joint forces, allies, and partners to help ensure a free and open Indo-Pacific.

“This engagement reinforced our strategic relationship,” said U.S. Space Force Capt. April Dawes, U.S. Space Forces-Japan director intelligence and event project officer. “Brig Gen Mastalir's presence underscores Japan’s critical role, emphasizing the need to synchronize space efforts within the Indo-Pacific.”

Following its recent establishment, U.S. Space Forces-Japan (SFJ) serves as the central point for coordination space activities in the region. SFJ’s mission is to synchronize and integrate regional space efforts to enhance Joint Force effectiveness & advance the US-Japan Alliance.

“One of our greatest strengths is the ability to tailor space capabilities to the unique challenges of each region,” Mastalir said. “In the Indo-Pacific, where we operate over vast distances in a contested space environment, our focus is on defending the Joint Force from space-enabled threats, integrating space operations with INDOPACOM missions, and deepening cooperation with our allies. We ensure Guardians are trained with a deep understanding of the region, so our capabilities meet mission-specific needs.”

Guardians deliver essential space capabilities such as secure communications, navigation, and missile warning - that enhance operational effectiveness and decision-making. During the tour, Mastalir underscored the importance of bolstering partnerships with allies like Japan and Australia to promote space security through unity and cooperation.

U.S. SPACE FORCES-JAPAN INFORMATION