
Kuroda Kanbei, also recognized as Kuroda Yoshitaka and later in life as Kuroda Josui, emerged as a military strategist and daimyo during the late Sengoku period. Regarded for his keen strategic mind, courage, and unwavering loyalty, he left an indelible mark as a respected warrior.
Born in Himeji in 1546, Kuroda Kanbei assumed leadership of the Kuroda family at the age of 21 following the passing of his father, Mototaka, who served as a senior retainer to the Kodera clan of Himeji. Recognizing the ascendancy of Oda Nobunaga, Kanbei proposed to his lord, Kodera Masamoto, the idea of aligning with the Oda forces. Despite Kodera's inclination to support the Mori clan, which opposed the Oda, Kanbei, reaching out to Toyotomi Hideyoshi, secured a direct audience with Nobunaga. His strategic counsel contributed to the successful capture of Himeji, leading to the Kodera's surrender. Pledging allegiance to the Oda clan, Kanbei and strategist Takenaka Hanbei served as advisors to Toyotomi Hideyoshi.
In 1577, Kanbei faced accusations of espionage from Nobunaga, resulting in the abduction of his nine-year-old son, Nagamasa, as a hostage. Fortunately, Takenaka Hanbei intervened, rescuing the boy. A year later, during a diplomatic mission to Itami Castle, Kanbei was captured but managed to escape, sustaining an injury that left him with a lasting limp.
Throughout the Sengoku period's later stages, Kuroda Kanbei, along with his son, continued to serve Toyotomi Hideyoshi. They played crucial roles in campaigns, including the invasion of the Chugoku region and the Shikoku Campaign of 1585. During the Kyushu mission, Kanbei, influenced by Christian daimyo Takayama Ukon, briefly embraced Christianity, adopting the name Don Simeon. However, due to rising concerns about foreign influence, he renounced Christianity and assumed the Buddhist name Josui.
As Chief Advisor to Hideyoshi's nephew, Kobayakawa Hideaki, during the Second Korean Campaign, Kanbei developed a close relationship with Hideyoshi. Following Hideyoshi's demise, the Kuroda shifted their allegiance to the Tokugawa camp, aligning against Western loyalist leader Ishida Mitsunari. In 1600, they fought alongside Kato Kiyomasa at the Battle of Sekigahara. Post-Sekigahara, Kanbei declined a position within the Tokugawa government but used his influence to spare the Shimazu clan's lands and Otomo Yoshimune's life.
Kuroda Kanbei's involvement in pivotal Sengoku period events and his strategic acumen significantly influenced Japanese history. His sage advice contributed to Hideyoshi's successes, showcasing not only military prowess but also a potential sense of humor, exemplified by his distinctive choice of wearing an owan bowl as a helmet.
See also
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Mashita Nagamori

Nagamori possessed remarkable diplomatic and administrative talent while remaining a brave warrior. He is believed to have come from the village of Mashita in the province of Owari, which today is part of Aichi Prefecture. He was a vassal of Oda Nobunaga and later served Toyotomi Hideyoshi. In the Battle of Komaki–Nagakute in 1584, Nagamori took at least two enemy heads. Later, he was entrusted with overseeing major public construction projects, including the reconstruction of Fushimi Castle and the building of the large Sanjō and Gojō bridges in Kyoto.
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Magara Jurōzaemon Naotaka

Magara Jurōzaemon Naotaka was a vassal of Asakura Yoshikage from the province of Echizen, and very little is known about his life, including even the exact year of his birth. Magara gained his renown through his heroic death at the Battle of Anegawa in 1570. In this battle, the combined forces of Oda Nobunaga and Tokugawa Ieyasu confronted the armies of Asai and Asakura, with Ieyasu taking command of the left flank and fighting against the Asakura forces. After crossing the shallow Anegawa River, which separated the two armies, Tokugawa’s finest generals — Honda Tadakatsu and Sakakibara Yasumasa — launched an assault on the headquarters of Asakura Kagetake, the commander-in-chief of the Echizen army. The attack by Honda Tadakatsu was so swift that Kagetake found himself almost completely surrounded by enemy troops.
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Kusunoki Masashige

Kusunoki Masashige was, without exaggeration, a genius of guerrilla warfare. If not for this talented commander, Emperor Go-Daigo would likely have failed not only to ascend the throne, but even to put up any real resistance against the powerful Hojo clan.
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Kobayakawa Takakage

Kobayakawa Takakage was rightfully considered one of the most intelligent men of his era. Even Kuroda Kanbei, the celebrated strategist famed for his cunning—about whom people said he could outwit even a fox—admitted that Takakage was his equal in intellect, and at times even surpassed him. After the death of his father, Mōri Motonari, Takakage effectively governed the Mōri clan for many years while serving as advisor to his nephew, Mōri Terumoto.
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Kira Chikazane

Chikazane, the son of Kira Chikasada and the nephew of the famous daimyō Chōsokabe Motochika, was married to his cousin, Motochika’s daughter. From a young age he showed great talent and promise, but his character was marked by a quick temper and a tendency toward sharp, sometimes aggressive behavior.
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Kyōgoku Takatsugu

From the very beginning of his career, Takatsugu served under Oda Nobunaga and was married to Nobunaga’s niece, which secured him a strong position at court and close ties to one of the most powerful clans of the era. However, the events of 1582 drastically changed his fate. When Akechi Mitsuhide rebelled against Nobunaga and treacherously killed him at the Honnō-ji Temple, Takatsugu sought to take advantage of the ensuing chaos to strengthen his own standing. He launched an attack on Nagahama Castle in Ōmi Province, hoping to expand his territories. The assault, however, was repelled, and soon after, Mitsuhide was defeated by Toyotomi Hideyoshi’s forces at the Battle of Yamazaki, leaving Takatsugu without allies or support.
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Kato Yoshiaki

Yoshiaki, a loyal vassal of the Oda clan, first distinguished himself as a talented warrior during the Battle of Shizugatake in 1583. For his bravery and outstanding military achievements, he was included in the famous group known as the “Seven Spears of Shizugatake” — an elite band of samurai celebrated for their exceptional courage in that battle. Later, Yoshiaki became one of Toyotomi Hideyoshi’s naval admirals and took an active part in his subsequent military campaigns. He commanded warships during the expeditions to Kyushu and the siege of Odawara, demonstrating not only valor but also exceptional leadership and strategic skill. For his loyal service and effective command, Yoshiaki was granted an estate in Matsuzaki with an annual income of 100,000 koku of rice — a symbol of significant rank and prosperity.
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Katagiri Katsumoto

Katsumoto was born into the family of Katagiri Naomasa, who came from an ancient and noble lineage. The Katagiri clan had served the early shoguns of the Minamoto house for over five centuries and held lands in the northern part of Shinano Province.
