
The , also called ''Kannō no juran'', was a civil war which developed from antagonisms between ''
shōgun
, officially , was the title of the military dictators of Japan during most of the period spanning from 1185 to 1868. Nominally appointed by the Emperor, shoguns were usually the de facto rulers of the country, though during part of the Kamakur ...
''
Ashikaga Takauji
was the founder and first ''shōgun'' of the Ashikaga shogunate."Ashikaga Takauji" in '' The New Encyclopædia Britannica''. Chicago: Encyclopædia Britannica Inc., 15th edn., 1992, Vol. 1, p. 625. His rule began in 1338, beginning the Muromac ...
and his brother,
Ashikaga Tadayoshi
"Ashikaga Tadayoshi" in '' The New Encyclopædia Britannica''. Chicago: Encyclopædia Britannica Inc., 15th edn., 1992, Vol. 1, p. 624. was a general of the Northern and Southern Courts period (1337–92) of Japanese history and a close associate ...
, thus dividing and weakening the early
Ashikaga shogunate
The , also known as the , was the feudal military government of Japan during the Muromachi period from 1336 to 1573.Nussbaum, Louis-Frédéric. (2005)"''Muromachi-jidai''"in ''Japan Encyclopedia'', p. 669.
The Ashikaga shogunate was establis ...
.
[Nussbaum, Louis-Frédéric ''et al.'' (2005). ''Japan encyclopedia'', p. 474.] These events are labeled ''
Kannō'' after the
Japanese era or ''
nengō
The , also known as , is the first of the two elements that identify years in the Japanese era calendar scheme. The second element is a number which indicates the year number within the era (with the first year being ""), followed by the literal ...
'' which was proclaimed by the
Northern Court
The , also known as the Ashikaga Pretenders or Northern Pretenders, were a set of six pretenders to the throne of Japan during the Nanboku-chō period from 1336 through 1392. The present Imperial House of Japan is descended from the Northern Cour ...
during the years 1350 through 1351 in the
Nanboku-chō period
The Nanboku-chō period (南北朝時代, ''Nanboku-chō jidai'', "North and South court period", also known as the Northern and Southern Courts period), spanning from 1336 to 1392, was a period that occurred during the formative years of the Mur ...
of Japanese history. One of the main effects of the Disturbance was the re-invigoration of the
Southern Court's war effort due to the flow of renegades from Kyoto who followed Tadayoshi to the Southern capital of
Yoshino, near
Nara
The National Archives and Records Administration (NARA) is an " independent federal agency of the United States government within the executive branch", charged with the preservation and documentation of government and historical records. It ...
.
Resurgence of the Southern Court
The events

Takauji was nominally ''shōgun'' but, having proved not to be up to the task of ruling the country, for more than ten years Tadayoshi governed in his stead.
["Ashikaga-Tadayoshi"](_blank)
Encyclopædia Britannica Online, accessed on August 11, 2009 The relationship between the two brothers was however destined to be destroyed by an extremely serious episode called the Kannō Incident, an event which takes its name from the
Kannō era (1350–1351) during which it took place and which had grave consequences for the entire country. Trouble between the two started when Takauji made
Kō no Moronao
was a Japanese samurai of the Nanboku-chō period who was the first to hold the position of '' Shitsuji'' (''Shōgun''s Deputy). He was appointed by Ashikaga Takauji, the first '' shōgun'' of the Ashikaga shogunate. As Deputy, he served no ...
his ''
shitsuji'', or deputy. Tadayoshi did not like Moronao and his policies so (at least according to the ''
Taiheiki
The (Chronicle of Great Peace) is a Japanese historical epic (see '' gunki monogatari'') written in the late 14th century and covers the period from 1319 to 1367. Nussbaum, Louis-Frédéric. (2005)"''Taiheiki''"in ''Japan Encyclopedia'', pp. 923� ...
''), after every effort to get rid of him failed, he tried to have him assassinated.
[Papinot (1972:29)] Tadayoshi in 1349 was forced by Moronao to leave the government, shave his head and become a Buddhist monk with the name Keishin under the guidance of
Zen
Zen ( zh, t=禪, p=Chán; ja, text= 禅, translit=zen; ko, text=선, translit=Seon; vi, text=Thiền) is a school of Mahayana Buddhism that originated in China during the Tang dynasty, known as the Chan School (''Chánzong'' 禪宗), and ...
master, poet, and old associate
Musō Soseki
was a Rinzai Zen Buddhist monk and teacher, and a calligraphist, poet and garden designer. The most famous monk of his time, he is also known as ("national Zen teacher"), an honorific conferred on him by Emperor Go-Daigo.''Musō Soseki'', Ky ...
.
[Yasuda (1990:22)][Ackroyd, Joyce. (1982) ''Lessons from History: The Tokushi Yoron, p.329.''] In 1350 he rebelled and joined his brother's enemies, the supporters of the
Southern court, whose Emperor
Go-Murakami appointed him general of all his troops. In 1351 he defeated Takauji, occupied
Kyoto
Kyoto (; Japanese: , ''Kyōto'' ), officially , is the capital city of Kyoto Prefecture in Japan. Located in the Kansai region on the island of Honshu, Kyoto forms a part of the Keihanshin metropolitan area along with Osaka and Kobe. , the ...
, and entered
Kamakura
is a city in Kanagawa Prefecture, Japan.
Kamakura has an estimated population of 172,929 (1 September 2020) and a population density of 4,359 persons per km² over the total area of . Kamakura was designated as a city on 3 November 1939.
Kama ...
. During the same year he captured and executed the Kō brothers,
Moronao and
Moroyasu, at Mikage (
Settsu province
was a province of Japan, which today comprises the southeastern part of Hyōgo Prefecture and the northern part of Osaka Prefecture. It was also referred to as or .
Osaka and Osaka Castle were the main center of the province. Most of Setts ...
).
The following year his fortunes turned and he was defeated by Takauji at Sattayama.
A reconciliation between the brothers proved to be brief. Tadayoshi fled to Kamakura, but Takauji pursued him there with an army. In March 1352, shortly after an ostensible second reconciliation, Tadayoshi died suddenly, according to the
Taiheiki
The (Chronicle of Great Peace) is a Japanese historical epic (see '' gunki monogatari'') written in the late 14th century and covers the period from 1319 to 1367. Nussbaum, Louis-Frédéric. (2005)"''Taiheiki''"in ''Japan Encyclopedia'', pp. 923� ...
by poisoning.
Their background
The extremely divisive Kannō Incident that divided the Muromachi regime put a temporary hold on the new shogunate's integration. Before the incident, the bureaucratic organs of the early regime were under the separate jurisdiction of the Ashikaga brothers Takauji and Tadayoshi, creating a bifurcated administration. Takauji was the leader of the house vassals, and thus controlled the Board of Retainers (the ''Samurai-dokoro'') and the Office of Rewards (the ''Onshō-kata''), while Tadayoshi was the bureaucratic leader controlling the Board of Inquiry's administration of the regime's judicial functions.
The Board of Retainers was used as a disciplinary organ towards house vassals; brigandage and other crimes were prosecuted. The Office of Rewards was used to hear the claims of and to give fiefs to deserving vassals. The Office of Rewards was used to enroll new warriors who were potential adversaries of the regime. The major judicial organ, the Board of Coadjutors, decided on all land dispute cases and quarrels involving inheritance. All judicial functions are ''par excellence'' used to resolve conflicts and disputes legally, within an institutional framework. Bureaucrats (''bugyōnin'') for the new regime were recruited from the ranks of those who served the
Hōjō regime before its fall. They were valuable because they knew how to read and write, a task beyond the reach of most warriors.
In the 1350s, the Kannō Incident and its aftermath divided and nearly destroyed the early regime. On the surface the incident looks like a factional struggle pitting Ashikaga Tadayoshi, Takauji's brother, against the Kō brothers, Moronao and Moroyasu backed by Takauji. The conflict can be pinpointed to differences in opinion regarding the estate system and, behind these differing opinions, to the different bureaucracies controlled by Takauji and Tadayoshi. On the whole Takauji was the innovator, while Tadayoshi played the conservative, wanting to preserve the policies of the past. In his capacity as a military leader of vassal bands, Takauji did two things that conflicted with Tadayoshi: he appointed vassals to ''
shugo
, commonly translated as “(military) governor,” “protector,” or “constable,” was a title given to certain officials in feudal Japan. They were each appointed by the ''shōgun'' to oversee one or more of the provinces of Japan. The po ...
'' posts as a reward for battlefield heroics, and he divided the ''
shōen
A was a field or manor in Japan. The Japanese term comes from the Tang dynasty Chinese term "莊園" (Mandarin: ''zhuāngyuán'', Cantonese: ''zong1 jyun4'').
Shōen, from about the 8th to the late 15th century, describes any of the privat ...
'' estates, giving half of them to his vassals in fief or as
stewardships. Tadayoshi strenuously contested these policies through the drafting of the
Kemmu Formulary
was a Japanese era name of the Northern Court during the Era of Northern and Southern Courts after '' Shōkei'' and before '' Ryakuō.'' Although Kemmu is understood by the Southern Court as having begun at the same time, the era was construed t ...
that opposed the appointment of ''shugo'' as a reward for battlefield service. He also opposed any sort of outright division of estate lands in his capacity as the leader of the Board of Coadjutors.
[Grossberg 1981:23-4] There was therefore a clear division between the policies of Takauji and his brother Tadayoshi.
Conflict can thus be said to have emerged as a result of having two heads of state whose policies contradicted each other. The events which followed the incident testify to the extent to which the regime began to lose its support. Deep divisions between members of the Ashikaga family strengthened the opposition. Both of the pillars of the Muromachi regime, Tadayoshi and Takauji, enacted token submissions to the Southern Court to push their own agendas: Tadayoshi in his desire to destroy the Kō brothers, and Takauji in his desire to defeat Tadayoshi. Ironically, even though the Southern Court was the enemy, it was used as the justification by regime members to attack each other.
Effects
One of the main effects of the Disturbance was the re-invigoration of the war effort of the Southern Court. To a large extent its renewed offensive was made possible by turncoats from the Muromachi regime. The imperialist offensive of 1352 directed against Takauji in Kamakura was made possible by the vast numbers of former adherents of Tadayoshi who became supporters of the imperialist leader
Nitta Yoshimune
was the third son of Nitta Yoshisada, and a commander of loyalist (Imperial) forces during the Nanbokuchō Wars.
In April 1352, Yoshimune led a force from Echigo Province to contribute to the loyalist efforts to drive the Shōgun, Ashikaga Takau ...
. The imperialist offensive against Kyoto in 1353 was made possible through the defection of the ''
shugo
, commonly translated as “(military) governor,” “protector,” or “constable,” was a title given to certain officials in feudal Japan. They were each appointed by the ''shōgun'' to oversee one or more of the provinces of Japan. The po ...
'' lord
Yamana Tokiuji. Tadayoshi's adopted son Ashikaga Tadafuyu is an outstanding example of defection: he became the leader of the western armies of the Southern Court during the imperialist offensives against Kyoto in 1353 and 1354.
The end of the Disturbance on the other hand eliminated the sharing of power between the two Ashikaga brothers putting it all into Takauji's hands, strengthening his position and ultimately that of the early Muromachi shogunate as a whole.
See also
*
Glossary of Japanese history
*
List of Japanese battles {{short description, None
The following is a list of Japanese battles, organised by date.
Ancient/Classical Japan
Jōmon Period
*Jimmu's Eastern Expedition (c. 7th century BCE)
Yayoi Period
* Takehaniyasuhiko Rebellion (c. 1st century BCE) ...
Notes
References
*
Ackroyd, Joyce. (1982) ''Lessons from History: The
Tokushi Yoron
The is an Edo period historical analysis of Japanese history written in 1712 by Arai Hakuseki (1657–1725).
Hakuseki's innovative effort to understand and explain the history of Japan differs significantly from previous chronologies which were ...
.'' Brisbane:
University of Queensland Press
Established in 1948, University of Queensland Press (UQP) is an Australian publishing house.
Founded as a traditional university press, UQP has since branched into publishing books for general readers in the areas of fiction, non-fiction, poetr ...
.
*Arnesen, P.J. The Medieval Japanese Daimyo. New Haven: Yale University Press, 1979.
*Grossberg, K. Japan's Renaissance. Cambridge: Harvard University Press, 1981.
*
* Nussbaum, Louis Frédéric and Käthe Roth. (2005). ''Japan Encyclopedia.'' Cambridge:
Harvard University Press
Harvard University Press (HUP) is a publishing house established on January 13, 1913, as a division of Harvard University, and focused on academic publishing. It is a member of the Association of American University Presses. After the reti ...
.
OCLC 48943301* Papinot, E. (1910). "Historical and Geographical Dictionary of Japan." 1972 Printing. Charles E. Tuttle Company, Tokyo, .
*Sato, S. "The Ashikaga Shogun and the Muromachi Bakufu Administration", in ''Japan in the Muromachi Age''. Eds. John W. Hall and Toyoda Takeshi. Berkeley: U.C. Press, 1977.
*
Titsingh, Isaac, ed. (1834).
iyun-sai Rin-siyo/Hayashi Gahō, 1652">Hayashi_Gahō.html" ;"title="iyun-sai Rin-siyo/
iyun-sai Rin-siyo/Hayashi Gahō, 1652 ''Nipon o daï itsi ran">Hayashi Gahō">iyun-sai Rin-siyo/Hayashi Gahō, 1652">Hayashi_Gahō.html" ;"title="iyun-sai Rin-siyo/Hayashi Gahō">iyun-sai Rin-siyo/Hayashi Gahō, 1652 ''Nipon o daï itsi ran; ou
Annales des empereurs du Japon.' Paris: Royal Asiatic Society">Oriental Translation Fund of Great Britain and Ireland
The Royal Asiatic Society of Great Britain and Ireland, commonly known as the Royal Asiatic Society (RAS), was established, according to its royal charter of 11 August 1824, to further "the investigation of subjects connected with and for the en ...
.
*Wintersteen, P.B. "The Muromachi Shugo and Hanzei" in ''Medieval Japan''. Ed. John Whitney Hall and Jeffrey Mass, Jeffrey P. Mass. New Haven: Yale University Press, 1974.
*Wintersteen, P.B. "The Early Muromachi Bakufu in Kyoto" in ''Medieval Japan''. Ed. John W. Hall and Jeffrey P. Mass. New Haven: Yale University Press, 1974.
*
{{DEFAULTSORT:Kanno Disturbance
Military history of Japan
Wars involving Japan
1350s in Japan
1350 in Asia
1351 in Asia