East Prussian Offensive
{'<entity_0>': 'East Prussian Offensive', '<entity_1>': '25 April 1945', '<entity_2>': 'East Prussia', '<entity_3>': 'World War II', '<entity_4>': 'Soviet Union', '<entity_5>': 'Nazi Germany', '<entity_6>': 'Poland'}
[['East Prussian Offensive', 'point in time', '25 April 1945'], ['East Prussian Offensive', 'location', 'East Prussia'], ['East Prussian Offensive', 'part of', 'World War II'], ['East Prussian Offensive', 'location', 'Poland'], ['East Prussian Offensive', 'location', 'Soviet Union'], ['East Prussian Offensive', 'location', 'Nazi Germany']]
The <entity_0> was a strategic offensive by the <entity_4> Red Army against the <entity_5> Wehrmacht on the Eastern Front (<entity_3>). It lasted from 13 January to <entity_1>, though some <entity_5> units did not surrender until 9 May. The <entity_0> is known to <entity_5> historians as the Second <entity_0>. The <entity_4> forces took heavy casualties while penetrating 30–60 km (19–37 mi) into east-northern part of <entity_6>, and the offensive was postponed until greater reserves could be gathered. On 24 January, Rokossovsky's leading tank units had reached the shore of the Vistula Lagoon, severing land communications with the rest of <entity_5> armed forces for the entire 4th Army along with several divisions of the 2nd Army which were now trapped in a pocket centered on <entity_2>. With the remnants of Army Group Centre effectively contained, <entity_4> forces could concentrate on reducing the <entity_5> forces in Pomerania and eliminating any possible threat to the northern flank of their eventual advance on Berlin.
['military operation']