Initially, the 1st brigade (Major General Shizuo NOZU), the 2nd brigade (Major General Shigeomi MIYOSHI), the detached 1st brigade (Colonel Tomonosuke TAKASHIMA), the detached 2nd brigade (Major General Akiyoshi YAMADA) as well as the Keishi-tai troop (later became the main force of the detached 3rd brigade) led by Major General and Superintendent-General of the Metropolitan Police Department Toshiyoshi KAWAJI and other troops were mobilized, and the other brigades were also mobilized subsequently.
当初、第1旅団（野津鎮雄少将）・第2旅団（三好重臣少将）・別働第1旅団（高島鞆之助大佐）・別働第2旅団（山田顕義少将）の外に川路利良少将兼警視庁大警視が率いる警視隊（後に別働第3旅団の主力）などが出動し、順次、他の旅団も出動した。