The was the last battle before the

Toyotomi The was a Japanese clan that ruled over the Japanese people, Japanese before the Edo period. Unity and conflict The most influential figure within the Toyotomi was Toyotomi Hideyoshi, one of the three "unifiers of Japan". Oda Nobunaga was a ...

main army's arrival on

Kyūshū is the third-largest island of Japan's five main islands and the most southerly of the four largest islands ( i.e. excluding Okinawa). In the past, it has been known as , and . The historical regional name referred to Kyushu and its surround ...

during Japan's

Sengoku period The was a period in History of Japan, Japanese history of near-constant civil war and social upheaval from 1467 to 1615. The Sengoku period was initiated by the Ōnin War in 1467 which collapsed the Feudalism, feudal system of Japan under the ...

. In 1586 at Hetsugigawa (present Ōnogawa) in

Bungo province was a province of Japan in eastern Kyūshū in the area of Ōita Prefecture. It was sometimes called , with Buzen Province. Bungo bordered Buzen, Hyūga, Higo, Chikugo, and Chikuzen Provinces. History At the end of the 7th century, Toyo ...

Toyotomi's vanguard divisions under

Chōsokabe Motochika was a prominent ''daimyō'' in Japanese Sengoku-period. He was the 21st chief of the Chōsokabe clan of Tosa Province (present-day Kōchi Prefecture), the ruler of Shikoku region. Early life and rise He was the son and heir of Chōsokabe Kuni ...

and

Sengoku Hidehisa , childhood name Gonbei (権兵衛) was a samurai warrior of the Sengoku period and the Edo period. He was the head of the Komoro Domain in Shinano Province. Papinot, Jacques Edmond Joseph. (1906). ''Dictionnaire d'histoire et de géographie du J ...

landed on Kyūshū with orders to act defensively until further troops were able to join them. But the advance party decided to disobey

Hideyoshi , otherwise known as and , was a Japanese samurai and ''daimyō'' (feudal lord) of the late Sengoku period regarded as the second "Great Unifier" of Japan.Richard Holmes, The World Atlas of Warfare: Military Innovations that Changed the Cour ...

's commands and relieve the castle of Toshimitsu. The Shimazu besieging army noted their approach, and redoubled their efforts to take Toshimitsu castle, so that when the invaders arrived at the Hetsugi river, which flowed within sight of the castle, they could see the flags of Shimazu flying from its towers. Motochika proposed a withdrawal, but his companions, Yoshimune and Hidehisa, insisted on doing battle, so the Shimazu set their trap. The decoy force led by Ijuin Hisanori attacked across the river and then withdrew, which persuaded the allied left wing to follow them. They were met by

arquebus An arquebus ( ) is a form of long gun that appeared in Europe and the Ottoman Empire during the 15th century. An infantryman armed with an arquebus is called an arquebusier. Although the term ''arquebus'', derived from the Dutch word ''Haakbus ...

and arrow fire, and the main body of the Shimazu under Iehisa and Tadamoto, then fell upon them. After much fierce fighting the invading force withdrew across the river and caused confusion to its own right wing. Chōsokabe Motochika was obliged to signal a full retreat, during which his son Nobuchika and

Sogō Masayasu was a Japanese samurai of the Sengoku period. He was second son of Miyoshi Yoshikata who was adopted by Sogō Kazumasa from the Sogō clan. In 1582, Masayasu was defeated by Chōsokabe Motochika`s large army during the battle of Nakatomigawa ...

were killed.

References

{{Reflist *Turnbull, Stephen (2012). ''Samurai Armies 1467-1649''. Osprey Publishing. 1587 in Japan Hetsugigawa Hetsugigawa Chōsokabe clan