Former 32nd Infantry Regiment Barracks Site (Kajō Park)

The former barracks of the Imperial Japanese Army 32nd Infantry Regiment (歩兵第三十二連隊, Hohei Dai-sanjūni Rentai) occupy one of the most historically layered sites in Tōhoku — the grounds of Yamagata Castle, known poetically as Kajō (霞城, "Mist Castle"). For nearly fifty years, from 1898 to 1945, this feudal castle was transformed into a modern military garrison, and the regiment raised here became inseparable from the identity of Yamagata City itself.

Origins: From Feudal Castle to Army Garrison (1872–1896)

Yamagata Castle was originally built in 1357 by Shiba Kaneyori and expanded significantly by Mogami Yoshiaki in the late 16th century into one of the largest flatland castles (hirajiro) in the Tōhoku region. After the Meiji Restoration, the castle grounds were sold to the government in 1872 and designated for military use. The 32nd Infantry Regiment was formally established in April 1896, initially at Akita, and received its regimental colors on 24 March 1898. Yamagata City purchased the castle lands and donated them to the Imperial Japanese Army to secure the regiment's permanent garrison; the city's chronology dates the regiment's arrival at the castle to 28 March 1898, although the regiment's own Japanese Wikipedia entry places the transfer from Akita after the Russo-Japanese War. The soldiers' arrival transformed Yamagata: the city's population nearly doubled from approximately 20,000 in the 1880s to around 44,000 by 1900, as merchants, suppliers, restaurants, photography studios, and barbershops proliferated around the garrison.

The Russo-Japanese War and the "Kajō Regiment" (1904–1906)

The 32nd Regiment was deployed to the Russo-Japanese War in 1904, fighting in major engagements in Manchuria, including the battles of Sandepu (Heikoutai) and Mukden. Upon their victorious return, the soldiers planted over 1,000 Somei Yoshino cherry trees around the castle's moats and earthworks in 1906 — a living memorial that gave the castle grounds their enduring identity as one of Yamagata's premier cherry blossom viewing spots. The regiment earned the nickname "Kajō Regiment" (霞城連隊) from the castle's alternate name.

Interwar Period: Siberia and Manchuria (1918–1937)

The regiment participated in the Siberian Intervention (1918–1922), deploying troops to the Russian Far East. During the interwar military reductions of 1925, the regiment was returned from the 2nd Division to the 8th Division but maintained its Yamagata garrison. Following the Manchurian Incident of 1931, about a battalion of the regiment was deployed to Manchuria for garrison and combat duties, marking the beginning of continuous overseas deployment that would last until the regiment's destruction.

Second Sino-Japanese War and Pacific War (1937–1945)

With the full-scale outbreak of war with China in 1937, the 32nd Regiment was posted to Manchukuo in October of that year, and in October 1939 it was transferred from the 8th Division to the newly formed 24th Division in Manchuria; at the same time its recruiting district was changed from Yamagata Prefecture to Hokkaido. The regiment's final and most devastating assignment came during the Pacific War. In March 1944, one battalion was sent to Saipan, and on 8 July 1944, the main force received deployment orders for Okinawa. The 32nd Regiment, attached to the 24th Division under the 32nd Army, fought in the catastrophic Battle of Okinawa from April to June 1945, one of the bloodiest engagements of the entire Pacific War. The regiment continued fighting even after the official end of hostilities on 15 August, holding its cave positions at Kuniyoshi until it burned its colours and laid down its arms on 28–29 August 1945. The regiment was virtually annihilated. A memorial called "Yamagata no Tō" (山形の塔, Yamagata Tower) was erected in February 1965 in Itoman City, Okinawa, at the place where the colours were burned; it commemorates 40,834 war dead from Yamagata Prefecture in all theaters, 765 of whom fell in the Battle of Okinawa.

Postwar Transformation: Kajō Park (1949–Present)

After Japan's surrender, the former garrison grounds were transferred to Yamagata City. In 1949, the site was opened to the public as Kajō Park (霞城公園). The transformation from military base to public park involved removing many of the barracks structures, though the castle's earthworks, stone walls, and moats survived. In 1986, the site was designated a National Historic Site as "Yamagata Castle Ruins" (山形城跡), covering the second bailey and part of the third.

Major restoration work has since recovered key castle structures: the Ninomaru Higashi-Ōtemon (East Main Gate of the Second Bailey) was reconstructed in 1991, the Ōte Bridge leading to the Honmaru Ichimonji Gate was rebuilt in 2006, and the gate's kōrai-mon and earthen walls followed in 2013. Within the park grounds, stone monuments mark the former location of the 32nd Infantry Regiment headquarters and barracks. The Yamagata Prefectural Museum, located within the park, houses exhibits related to the region's military history.

Today, Kajō Park covers approximately 35.9 hectares in the center of Yamagata City, serving as a public green space, historical monument, and memorial landscape. The cherry trees planted by returning soldiers in 1906 — now numbering approximately 1,500 — bloom each spring as a reminder of the garrison's legacy. The park stands as one of the most significant examples in Japan of a feudal castle site repurposed for military use and subsequently converted into a public memorial park.