21st Army Corps (Russian Empire)

The 21st Army Corps was an Army corps in the Imperial Russian Army.

Composition

 * 33rd Infantry Division
 * 44th Infantry Division

Part of

 * 3rd Army: 1914 - 1915
 * 8th Army: 1915
 * 2nd Army: 1915
 * 5th Army: 1915 - 1916
 * 12th Army: 1916 - 1917
 * 4th Army: 1917

Commanders

 * 1906-1909: Nikolai Ruzsky
 * 1914-1915: Yakov Schkinsky