It is on this date that the German Nazi concentration and extermination camp of Auschwitz-Birkenau was liberated.

UNESCO: OFFICE IN DAKAR

Auschwitz was the biggest Nazi extermination camp, where more than 1.1 million people, most of them Jews, were murdered.

BBC: Germany arrests 'former Auschwitz guard' Hans Lipschis

The date is of course significant as it was on this day in 1945 that the Auschwitz Birkenau Nazi Concentration and Extermination Camp was liberated.

UNESCO: UN International Holocaust Remembrance Day 2013

Notable is Ms Sereny's account of her sustained interviewing of Franz Stangl, who had been commandant of the extermination camp at Treblinka, after a German court had sentenced him to life imprisonment.

ECONOMIST: German history

Mr Ward, who has represented Bradford East since 2010, described Auschwitz as "the Nazi concentration and extermination camp which is the site of the largest mass murder in history" on his website.

BBC: David Ward

His deep and unwavering dedication to children was expressed until the moment of his death in 1942, when he chose to accompany the children of his orphanage, in the Warsaw Ghetto, to the Treblinka extermination camp where they all perished together.

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