互动战役
1600年9月 · Hasedo Castle, Dewa Province
An Uesugi army under Naoe Kanetsugu invaded Mogami territory but failed to take Hasedo Castle and withdrew after news of Sekigahara.
After the Aizu expedition turned west, the Uesugi attacked Mogami territory amid both the national conflict and a long regional struggle over Shonai.
Hasedo held out. After learning of the Western defeat at Sekigahara, the Uesugi withdrew to Okitama. The Uesugi were later reduced to Yonezawa and the Mogami enlarged.

The campaign is treated not merely as a northern Sekigahara but as a regional war over Shonai, Okitama, and the Yamagata basin.
数据注意事项
Troop totals, losses, and individual exploits are limited to what the research note supports.
参考资料
正文中的编号对应上方列表中的资料。可信度表示该记述在出处中获得多大程度的佐证,并非指坐标的精度或年代的确度。

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