The Austro-Hungarian fortress of Przemyl in Galicia (present-day Poland) fell to Russian forces on March 22nd 1915 after a siege lasting more than four months.
A campaign against the Russians in the Carpathian Mountains had failed to ease the pressure on Przemyl, and direct attempts at relief were also unsuccessful.
Around 120,000 Austro-Hungarian soldiers were taken prisoner.
The winter fighting seriously weakened the Austrian position, but Przemyl was to be recaptured in June 1915 as part of a German-led offensive.
Posted by: Peter Alhadeff, Centenary News