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![Poles walk among the ruins of besieged Warsaw. [LCID: 47270]](https://encyclopedia.ushmm.org/images/thumb/2adc847c-f75f-4897-ad13-554b935e0949.jpg.pagespeed.ce.pb2uzIpAE_.jpg)
Artículo Destacado
Invasión de Polonia en el otoño de 1939
Las tropas alemanas invadieron Polonia el 1° de septiembre de 1939, desencadenando así la Segunda Guerra Mundial. En respuesta a esa agresión, Gran Bretaña y Francia declararon la guerra contra la Alemania nazi.
![Stretcher bearers carry a wounded soldier during the Battle of the Somme. [LCID: 2453747]](https://encyclopedia.ushmm.org/images/thumb/647ba4e2-8fc6-4340-9d0c-21dd535eaf42.jpg.pagespeed.ce.UQQg9xvh9e.jpg)
![Portrait of the Weidenfeld family wearing Jewish badges in the Czernowitz (Cernauti) ghetto shortly before their deportation to Transnistria. [LCID: 30087]](https://encyclopedia.ushmm.org/images/thumb/315f3216-df2c-4856-a75c-c55ce3181d29.jpg.pagespeed.ce._Ke_AHmVfl.jpg)
![Arrival of Polish Jewish displaced persons in Vienna. [LCID: 04659]](https://encyclopedia.ushmm.org/images/thumb/0d11862f-edbc-4362-a5e1-2a106d09b4bf.jpg.pagespeed.ce.ly9qPed0Ld.jpg)
![German troops parade through Warsaw after the invasion of Poland. [LCID: 80487]](https://encyclopedia.ushmm.org/images/thumb/6b473ced-71b7-474b-9519-969ed787dda8.jpg.pagespeed.ce.HV1V5b7BX5.jpg)
![A witness is sworn in at the trial of 61 former personnel and prisoners from the Mauthausen concentration camp. [LCID: 11724]](https://encyclopedia.ushmm.org/images/thumb/d0f0988f-a458-4fb3-9ab8-cfafb09a6a07.jpg.pagespeed.ce.McrftNC6ro.jpg)
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