Georg August Paul Freiherr[2] von Stackelberg (Russian: Георгий Карлович Штакельберг, romanized: Georgij Karlovič Štakel'berg; 30 July [O.S.

(now the St. Petersburg Philharmonic Orchestra) As a commander in the 1st Semirechye Cossacks from 1874 to 1876, Stackelberg distinguished himself during the Russian conquest of the Khanate of Khiva and the Kokand expedition of 1875 under General Konstantin von Kaufman.

From April 5, 1904, during the Russo-Japanese War, Stackelberg was commander of the Russian 1st Siberian Army Corps, which played a major role in the Battle of Te-li-Ssu.

In the subsequent Battle of Sandepu, Stackelberg chose to ignore Kuropatkin's orders and made gains against entrenched Japanese positions, albeit with heavy casualties, but was forced to withdraw when reinforcements were denied.

Relieved of his command for insubordination, he was sent back to St Petersburg after the battle,[3] where he was awarded the Order of St. George (4th class) for his actions.