Western Army

The Western Army refers to the alliance who sought to defend the Toyotomi reign after Hideyoshi's death. Officers under this faction are Mitsunari Ishida's friends or Toyotomi loyalists. Two main divisions are the Sanada loyalists and the Uesugi troops. These generals either participated in the decisive battle at Sekigahara or were sent to defend Ueda Castle or Hasedo.

The newer title adds three other major battles that separate the army: Fushimi Castle, Otsu Castle and Ishigakibaru.

Army
* Note: This list includes people who were present in Samurai Warriors 2, its expansion, and Samurai Warriors 3. It is not meant to be a historically accurate list of generals. It does not include any special dream stage conditions for Sekigahara.

Commander

 * Mitsunari Ishida

Major Generals

 * Sakon Shima
 * Yoshihiro Shimazu
 * Ginchiyo Tachibana *
 * Musashi Miyamoto *
 * Motochika Chosokabe *

Vassals

 * Toyohisa Shimazu
 * Yoshitsugu Otani
 * Hideie Ukita
 * Yukinaga Konishi
 * Hideaki Kobayakawa (turncoat)
 * Hidemoto Mori
 * Hiroie Kikkawa (turncoat)
 * Ekei Ankokuji
 * Teruzumi Akashi
 * Satoie Gamo
 * Suketada Ogawa (turncoat)
 * Yasuharu Wakisaka (turncoat)
 * Morichika Chosokabe
 * Masaie Natsuka
 * Shigemasa Toda
 * Tamehiro Hiratsuka

Commander

 * Masayuki Sanada

Vassals

 * Yukimura Sanada
 * Genba Karasawa
 * Mino Kaneko
 * Yorisada Yazawa
 * Zushonosuke Yumoto
 * Bitchu Kozuki
 * Yukishige Yokotani

Commander

 * Hideie Ukita

Major Generals

 * Yoshihiro Shimazu
 * Ginchiyo Tachibana *

Commander

 * Kanetsugu Naoe
 * Kagekatsu Uesugi

Vassals

 * Keiji Maeda
 * Chikanori Suibara
 * Yoshihide Shida
 * Mototada Kasuga

Commander

 * Terumoto Mōri

Major Generals

 * Muneshige Tachibana
 * Yoshihiro Shimazu *
 * Sakon Shima *

Commander

 * Yoshimune Ōtomo
 * Ginchiyo Tachibana *

Major Generals

 * Muneshige Tachibana
 * Motochika Chosokabe *
 * Yoshihiro Shimazu *

Vassals

 * Muneyuki Yoshiro