US Military Typhon to be stationed in Japan by 2026, 1600 km range will change southwestern defense

The name Kanoya in Kagoshima Prefecture has once again become a crucial point in understanding the firepower deployment of the Japan-US alliance. The US Army's medium-range capability system Typhon and HIMARS are reported to be deployed to the Japan Maritime Self-Defense Force's Kanoya Air Base in conjunction with Valiant Shield 2026 starting in late June and the Orient Shield in September, and will be stored at US military bases in Japan after training. The Ministry of Defense has stated that live-fire exercises are not planned, but the core issue is not whether there will be launches. It is a significant operational precedent that a US Army ground launch system capable of handling Tomahawks will remain on Japanese territory even after the exercises conclude.

What the deployment of Valiant Shield 2026 indicates

According to the announcement from the Joint Staff Office, Valiant Shield 2026 will be conducted from June 22 to July 1, involving Self-Defense Force facilities, US military facilities in Japan, the city of Ishinomaki, the Amami Islands, surrounding air and maritime areas, as well as Hawaii and Guam in a wide-area training exercise. Participating units will include the Joint Operations Command, ground, maritime, and air forces, space operations groups, the US Indo-Pacific Command, and multiple allied nations. This is not merely participation in a US military-hosted exercise; it is training that connects Japan's Joint Operations Command to the US military's wide-area operational cycle from the initial stages.

Resolute Dragon 26, which will be conducted around the same time, should not be overlooked. The Ground Staff Office announced that from June 20 to 30, live training exercises will be conducted with the US Marine Corps in a range that includes Kyushu, Amami, Tokunoshima, Okinawa, Miyako, Ishigaki, and Yonaguni. The US side will include the 3rd Marine Expeditionary Force, the 12th Marine Regiment, the 3rd Multi-Domain Task Force, the 7th Fleet, and the 18th Air Wing. In other words, the Typhon in Kanoya should be understood as part of a dispersed operation involving air, sea, and land forces utilizing the southwestern islands, rather than an isolated equipment display.

The range of Typhon is also a political issue

Typhon is a ground launch system capable of operating SM-6 and Tomahawk missiles. Reports indicate that the range of the Tomahawk is approximately 1,600 km, while the SM-6 exceeds 300 km. Considering Kanoya as a starting point, the calculations for deterrence against maritime traffic routes in the East China Sea, north of Taiwan, and around the southwestern islands will change. This is because the long-range firepower of the US Army overlaps with the traditional concept of maintaining control of the area solely with the JMSDF's escort ships and P-1 patrol aircraft.

However, I am cautious about evaluating this solely as a simple enhancement of capabilities. During the deployment in Iwakuni in September 2025, Typhon was removed from Japan after training. This time, it is said that after withdrawing from Kanoya, it will be stored at US military bases in Japan. This difference is not insignificant. Even if it is not a permanent deployment, it shortens the time for re-deployment in a crisis and simultaneously gives the impression to China and Russia that "the US military's firepower in Japan can fluidly increase or decrease."

The focus of alliance operations shifts to launch authority

During the Japan-US defense ministerial meeting on May 30, flexible air dispersion in the southwestern region, forward presence, and the temporary deployment of US missile systems were confirmed. Furthermore, discussions are underway to accelerate the joint development and production of SM-3 Block IIA and AMRAAM. The fact that equipment, ammunition, training areas, and base storage are beginning to align on the same line is a notable feature of this situation.

• Valiant Shield 2026 will be conducted from June 22 to July 1
• Resolute Dragon 26 will be conducted from June 20 to 30 in Kyushu and the southwestern islands
• Typhon is reported to be capable of operating Tomahawks with a range of approximately 1,600 km and SM-6 exceeding 300 km
• After the deployment in Kanoya, Typhon and HIMARS are expected to be stored at US military bases in Japan

From the Chinese perspective, this type of deployment will likely be seen as a movement linking Japan's counterattack capabilities with the US military's medium-range firepower network. From Japan's perspective, this is a rational measure to enhance the effectiveness of southwestern defense. However, the decision-making for launches in a crisis, sharing of target information, and accountability to local governments cannot be resolved solely through press releases about the exercises.

The focus this time is not on "whether missiles will be fired," but on "how quickly launch-capable systems are re-deployed within Japan and under whose authority they will be operated."

Source: Ministry of Defense Joint Staff Office "Participation in Valiant Shield 2026," Ground Staff Office "Resolute Dragon 26," Ministry of Defense "Summary of Japan-US Defense Ministerial Meeting," USNI News, Kyodo/SCMP reports.