Sengenbaru Airstrip

The airfield was closed and abandoned following the end of World War II and the surrender of Japan. As an Imperial Japanese Army Air Force facility, its operations ceased with the country's demilitarization.

The site of the former Sengenbaru Airstrip is now entirely occupied by the Japan Ground Self-Defense Force (JGSDF) Camp Kusu (陸上自衛隊玖珠駐屯地). The JGSDF camp was established on the site in 1957 and has since become one of Japan's most important armored warfare bases, housing the Western Army Tank Unit. The original runway is no longer intact as a landing strip but its outline is still clearly visible on satellite imagery, having been repurposed as a main road and training ground within the military installation. There are no remnants of its use as an airport accessible to the public.

Sengenbaru Airstrip, known in Japan as Kusu Airfield (玖珠飛行場), was a military airfield constructed by the Imperial Japanese Army around 1943-1944. Its primary purpose was to support Japan's defense during the final stages of World War II. Initially, it functioned as a training base for the Tachiarai Army Flight School's Kusu Education Unit (大刀洗陸軍飛行学校玖珠教育隊). As the war progressed and the threat of an Allied invasion of the Japanese mainland loomed, the airfield's role transitioned to an operational combat base. It is most historically significant for being a forward base for 'Special Attack' (Kamikaze) units. The 212th Shinbu Squadron (第212振武隊), which flew advanced Nakajima Ki-84 Hayate 'Frank' fighters, was stationed at Kusu for suicide missions against the US Navy fleet during the Battle of Okinawa in 1945. The airfield is a poignant reminder of the desperate final defense efforts of Japan during the war.

There are absolutely no plans or prospects for reopening Sengenbaru Airstrip. The site is an active, high-security military base critical to the JGSDF's armored capabilities. Its conversion to civilian use is not feasible. The identifier 'JP-1831' is not an official ICAO code, which for Japan begins with 'RJ'. This code is an unofficial designation used in non-governmental databases and flight simulator software to mark the location.