My name is Isidore Laks. I was born in Paris in February, 1934 I arrived at Auschwitz on 3 August 1944 in a transport of 1300 Jews deported from Drancy. I did not return.

#OTD 1 August 1944, the Soviet Red Army liberated the city of Kovno. Tragically, the ghetto was liquidated just 3 weeks before liberation. I write about these events in I Am Juden. Over 90% of Jews living in Kovno during the Nazi occupation were murdered during the Holocaust.

#OTD 31 July, 1940 | German police unit publicly abuses and humiliates Rabbi Moshe Yitzchak Hagerman in Olkusz, Poland, on “Bloody Wednesday”. The Jews of Olkusz were deported to Auschwitz in 1942, where most of them were murdered.

Jewish prisoners standing to attention in Dachau concentration camp, taken #OTD 30 July 1938.

Jewish boy surrenders in Warsaw during the Warsaw Ghetto Uprising while SS-Rottenführer Josef Blösche points a submachine gun in his direction, 1943. Luckily, the boy survived. Blösche was executed in Leipzig #OTD 29 July 1969.

My name is Francine Finkielsztaj. I was born in Paris on July 28th, 1941. In July 1943, I was deported to Auschwitz and separated from my parents. My last memory is being carried into a shower room. Then the room started to fill with gas. Remember us, please.

#OTD 27th July 1941: Wehrmacht documents first steps in the "Holocaust by bullets”. The last picture of the Jews of Mogilev.

#OTD 26 July 1942 Nazi officer, Albert Battel, ordered the only access to the Jewish ghetto in Przemysl be blocked from the SS effort to liquidate the ghetto. #RighteousAmongstTheNations Read the story & discover the fate of Przemysl's Jews here ow.ly/btzz50vbfH7

July 18th 1940, Chiune Sugihara began issuing transit visas to Jewish refugees in Lithuania. I write about this selfless diplomat in I Am Juden. Sugihara's brave efforts during the Holocaust earned him the distinction of Righteous Among the Nations.

Human bones litter the grounds of the Majdanek concentration camp in Lublin, Poland following its liberation by Soviet forces #OTD July 24, 1944. AFP/Getty Images

21 July 1944 | Two prisoners, a Pole Jerzy Bielecki & a Polish Jew Cyla Cybulska escaped #Auschwitz. They were in love. Jerzy managed to get an SS uniform & staged a fake escort. The escape was successful.

20-year-old Rachel Polakiewicz & her family were imprisoned in the Vel d'Hiv in Part on 16th July 1942. Less than a month later she was murdered in Auschwitz.

18 July 1947, Jewish Holocaust survivors, deemed to be “illegal immigrants” by the British government, were removed by soldiers from the ship Exodus upon its arrival in Haifa; the survivors were eventually deported to Germany Learn more: ow.ly/ArQw50JNkXs

#OTD 17 July 1925 | German Jewish woman Anita Lasker-Wallfisch was born in Breslau (today Wrocław). A cellist. In #Auschwitz from Dec 1943. Member of the female camp orchestra, liberated in Bergen-Belsen. She turns 101 today. Many happy returns dear Anita!

Jewish youth rescued from the Auschwitz Nazi concentration camp show their camp tattoos on board a refugee ship #OTD July 15, 1945. Defiance.

The Güns family survived the Holocaust living under false identities in Croatia This ID card in the name of Miklosch Balogh, Miksa-Misu Güns's false identity, was issued in Kovačica #OTD 13 July 1941 This is their story: ow.ly/80Nl50JNkHm

#OTD July 11, 1942. ‘Black Sabbath’. Nazis summoned ten thousand young Jews to Liberty Square (Salonika, occupied Greece) and tortured and humiliated them. Soon after, they confiscated Jewish property, forced them to wear the yellow badge, and moved the Jews into Ghettos.

"On July 11 they killed my father. I balled my fists; I cried ...”—Michael Kraus Michael's father, Karel, was among the 7,000 Jews imprisoned in the "Czech family camp" (section Bllb) who were murdered at Auschwitz-Birkenau from July 10–12, 1944. #OTD

#OTD in 1938 Munich's Great Synagogue was demolished: first synagogue in Germany to be destroyed the Nazis. Hitler visited city in June 38' & in attack on culture, ordered its destruction due to proximity to German Artisans’ House. Demolition was July 8, “German Art Day”.

My name is Istvan Ferenc Reiner. I was born #OTD 6 July 1940 in Hungary, to my parents Bela and Livia. In June 1944 we were deported to #Auschwitz and separated on arrival. I was murdered in a gas chamber.

#OTD 5 July 1942, Margot Frank, Anne Frank's older sister, is called up to labour camp Nazi Germany; 6 July they go hiding.

Sue Ryder, known as Lady Ryder of Warsaw, served in the Polish section of the Special Operations Executive. After the war, she founded homes for those traumatised or injured during WWII, dedicating her life to charitable work. She was born #OTD 3 July 1924.

#OtD 1 July 1943 Dutch anti-Nazi resistance fighter Willem Arondeus was executed after attacking the Amsterdam ID registry. Before his death Willem asked a friend to testify after the war that "homosexuals are not cowards".

Polish Jew Szmul Lewi Wajnsztejn was born in Sokołów. A tailor. During the war he lived in France. He arrived in a deportation at Auschwitz #OTD 30 June 1942 Prisoner No 43667 He perished in the camp on 18 August 1942.

Warning: this is a distressing photo. #OTD in 1941, Germany occupies Lviv, Poland. In a pogrom that occurs between June 29 and July 3, some 4,000 Jews are killed.

We survived Hitler; Death is no stranger to us; Nothing will keep us from our Jewish Homeland; The blood is on your head if you fire upon this unarmed ship!" This banner was held aloft by Holocaust survivors aboard the Josiah Wedgewood #OTD 27 June 1946 ow.ly/4ijL50OReFH

Some 10,000 Jews were murdered within the first six weeks of the German invasion of Kovno. Lithuanian militia leading Jews to the Seventh Fort, Kovno, Lithuania, #OTD 25 June 1941

Nazi Germany invaded the Soviet Union in Operation Barbarossa on June 22, 1941. With 4.5 million troops and over half a million motorized vehicles, it was the largest invasion force in the history of warfare. 26 million Soviets would die in the war that followed. #OTD

My name is Julika Spiegel. I was born in 1939 in Budapest to Pal and Erzsebet. During the war we lived in Eger. In June of 1944, German soldiers murdered me in the gas chamber at Auschwitz. I was 5 years old. This photograph is all that is left of me.

#OTD June 18 1944, the Auschwitz Report, written by two Slovak Jewish prisoners (Rudolf Vrba & Alfréd Wetzler) who escaped from Auschwitz on April 7, 1944, goes public worldwide through media channels in Switzerland.