Editing Tokugawa Ieyasu (section)

===Unification of Mikawa===
{{Main|Mikawa province}}

[[File:Azukizaka 1564.JPG|thumb|[[ukiyo-e]] print depicting the [[Battle of Azukizaka (1564)|Battle of Batogahara]] between Tokugawa clan against [[Ikkō-ikki]] movement in 1563–1564.]]

During this period, the Matsudaira clan faced a threat from the [[Ikkō-ikki]] movement, in which peasants banded together with [[Sōhei|militant monks]] under the [[Jōdo Shinshū]] sect, and rejected the traditional feudal social order. Ieyasu undertook several battles to suppress this movement in his territories, including the [[Battle of Azukizaka (1564)]]. 

Some of Ieyasu's vassals were in the Ikkō-ikki ranks, notably[[Honda Masanobu]] and [[Natsume Yoshinobu]], who had deserted him for the Ikkō-ikki rebellion out of religious sympathy.{{sfn|Turnbull |1998 |p=216}} However, many of Ieyasu's core vassals who were also followers of the sect, such as Ishikawa Ienari<ref name="Ishikawa Ienari">{{Cite book|author=Sunao Kawaguchi (川口素生)|title=戦国軍師人名事典|publisher=学習研究社|date=2009|page=302}}</ref> and [[Honda Tadakatsu]], quickly abandoned the Ikkō faith of Jōdo Shinshū and stayed loyal to Ieyasu in order to confront the rebels.<ref name="Turnbull 2012; Honda Tadakatsu">{{harvtxt|Stephen Turnbull |2012 |pp=13, 27, 34}}</ref><ref>{{cite book |author1=Tadachika Kuwata |title=日本の合戦. 第5巻 (織田信長) |trans-title=Battle of Japan Volume 5 (Oda Nobunaga) |date=1965 |publisher=人物往来社 |location=Tokyo |page=207 |url=https://ndlsearch.ndl.go.jp/books/R100000002-I000000867858 |access-date=23 May 2024 |language=Ja}}</ref> 

On January 15, 1564, Ieyasu decided to concentrate his forces to attack and eliminate the Ikkō-ikki from Mikawa. In the [[Battle of Azukizaka (1564)|Battle of Azukizaka]], Ieyasu was fighting on the front lines and was nearly killed when he was struck by several bullets, but survived because they did not penetrate his armor.<ref name="Turnbull 2012; Honda Tadakatsu" /> Both sides were using new gunpowder weapons which the [[Portuguese Empire|Portuguese]] had introduced to Japan 20 years earlier. At the end of battle, the Ikkō-ikki were defeated. By 1565, Ieyasu had become the master of all of Mikawa Province.{{Citation needed|date=May 2024}}

In 1566, as Ieyasu declared his independence from the Imagawa clan, he reformed the order of Mikawa province, starting with the Matsudaira clan, after he pacified [[Mikawa Province|Mikawa]]. This decision was made after he was counseled by his senior vassal [[Sakai Tadatsugu]] to abandon the clan's allegiance to the Imagawa clan.<ref>{{harvtxt|Arthur Lindsay Sadler |2014|p=57}}</ref> He also strengthened his power base by creating a military government system for the Tokugawa clan in Mikawa which was based on his hereditary vassals, the [[Fudai daimyō]]. The system which was called "''Sanbi no gunsei''" (三備の軍制) divided governance into three sections:<ref>{{cite book |author1=Tamotsu Fujino |title=徳川政権と幕閣 |trans-title=Tokugawa government and Bakufu |date=1995 |publisher=新人物往来社 |location=11 |url=https://books.google.com/books?id=SYINAQAAMAAJ |access-date=27 May 2024 |language=Ja}}</ref><ref>{{cite book |author1=Tamotsu Fujino |title=徳川幕閣: 武功派と官僚派の抗争 |trans-title=Tokugawa Shogunate: Conflict between the military faction and the bureaucratic faction |date=1967 |publisher=中央公論社 |pages=16, 29 |url=https://books.google.com/books?id=DnJDAAAAYAAJ |access-date=27 May 2024 |language=Ja}}</ref><ref>{{cite book |author1=Rizō Takeuchi |title=角川日本地名大辞典: 愛知県 |trans-title= |date=1978 |publisher=Kadokawa Shoten |page=41 |url=https://books.google.com/books?id=ZgMRAQAAMAAJ |access-date=27 May 2024 |language=Ja}}</ref>

# [[Hatamoto]]-Senshi: Ieyasu's direct vassals and personal unit of the army. Their task was to personally protect Ieyasu. The earliest commanders of this unit included Matsudaira Ietada (Tojo), [[Torii Mototada]], [[Honda Tadakatsu]], [[Sakakibara Yasumasa]], [[Ōkubo Tadayo]], Osuga Yasutaka, Uomura Iezumi, and others
# Higashi Mikawa: The eastern Mikawa province army unit, put under the control of Sakai Tadatsugu as overall commander. The commanders of this unit consisted of many Matsudaira clansmen and other hereditary vassals of Tokugawa such as [[Matsudaira Ietada (Fukōzu)]], [[Matsudaira Tadamasa]], [[Matsudaira Ietada (Katahara)]], and others
# Nishi-Mikawa: The western Mikawa province army unit, put under the ''de jure'' control of Ishikawa Ienari (''de facto'' control lay with his nephew, [[Ishikawa Kazumasa]]) as overall commander. The commanders of this unit consisted of many Matsudaira clansmen and other hereditary vassals which assigned on eastern side of the province, such as Shimada Heizo, [[Hiraiwa Chikayoshi]], [[Naitō Ienaga]], [[Sakai Tadatoshi]], Matsudaira Shinichi, and others.