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INTERACTIVE BATTLE

Koriyama Campaign

1588年6月〜7月 · Koriyama, Mutsu Province

Date Masamune and the Satake-Ashina side fought and faced each other around Koriyama before a negotiated settlement.

Background

After Hitotoribashi, conflict among the Date, Satake, and Ashina continued over local lords, castles, and routes in southern Oshu.

Outcome

Neither side won decisively before peace was arranged, but divisions within the Ashina and Date diplomacy continued toward Suriagehara in 1589.

Koriyama Campaign — Koriyama, Mutsu Province

Course of the battle

1　June 1588

The armies take positions around Koriyama

Date and Satake-Ashina forces took positions around Koriyama and contested castles and routes.

伊達政宗

Date Masamune — 伊達軍の指揮

佐竹義重

Satake Yoshishige — 佐竹方の中心

蘆名義広

Ashina Yoshihiro — 蘆名方当主

Sources12·Certainty: Medium

2　Summer 1588

Skirmishing and confrontation continue

The campaign continued through local fighting, diplomacy, and reinforcement rather than a single decisive clash.

伊達政宗

Date Masamune — 伊達軍の指揮

佐竹義重

Satake Yoshishige — 佐竹方の中心

蘆名義広

Ashina Yoshihiro — 蘆名方当主

Sources12·Certainty: Medium

3　Around July 1588

A settlement is reached

Peace was arranged, but the wider conflict remained unresolved and continued into the struggle for Aizu in 1589.

伊達政宗

Date Masamune — 伊達軍の指揮

佐竹義重

Satake Yoshishige — 佐竹方の中心

蘆名義広

Ashina Yoshihiro — 蘆名方当主

Sources12·Certainty: Medium

Historical significance

The campaign links Hitotoribashi and Suriagehara and is presented as a multi-sided southern Oshu conflict, not a duel of two commanders.

Key figures

伊達氏

1

伊達政宗

Date Masamune — 伊達軍の指揮

伊達方

Sources12·Certainty: Medium

佐竹氏

1

佐竹義重

Satake Yoshishige — 佐竹方の中心

佐竹・蘆名方

Sources12·Certainty: Medium

蘆名氏

1

蘆名義広

Ashina Yoshihiro — 蘆名方当主

佐竹・蘆名方

Sources12·Certainty: Medium

Other events of 1588

Month 4　山城国後陽成天皇の聚楽第行幸Month 7　山城国刀狩令山城国北条氏規が上洛して秀吉に従属表明

Notes on the data

Troop totals, losses, and individual exploits are limited to what the research note supports.

Sources consulted

  1. 郡山市地域史資料
  2. 南奥州の佐竹・伊達抗争に関する調査ノート

The numbers in the text refer to the list above. Certainty indicates how far a statement is supported by the cited sources; it does not refer to the precision of the coordinates or the dating.

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