August 31st, 2015

- Having held up the Austro-Hungarian advance southwest of Lutsk, General Brusilov, given that the enemy is clearly attempting to envelop his positions from the north, orders his 8th Army to pull back behind the Styr River running south of the city.  The withdrawal is accomplished without significant interruption, though Lutsk itself is captured by the Austro-Hungarian IX Corps by this evening.  While the Austro-Hungarian armies are advancing, it is not the crushing envelopment Conrad had envisioned.  Hoping to yet win a decisive victory, Conrad today reestablishes 4th Army at the northern end of the line, taking over IX, X, and XIV Corps from 1st Army, and assigns it the primary mission of advancing beyond Lutsk to Rovno.