January to April 1943

On 18 January 1943, the Germans began their second deportation of the Jews, which led to the first instance of armed insurgency within the Ghetto. While Jewish families hid in their so-called "bunkers", fighters of the ŻZW, joined by elements of the ŻOB, resisted, engaging the Germans in direct clashes. Though the ŻZW and ŻOB suffered heavy losses (including some of their leaders), the Germans also took casualties, and the deportation was halted within a few days.

Only 5,000 Jews were removed, instead of the 8,000 planned by Globocnik. Hundreds of people in the Warsaw ghetto were ready to fight, adults and children, sparsely armed with handguns, gasoline bottles, and a few other weapons that had been smuggled into the Ghetto by resistance fighters. Most of the Jewish fighters did not view their actions as an effective measure by which to save themselves, but rather as a battle for the honor of the Jewish people, and a protest against the world's silence.

Two resistance organizations, the ŻZW and ŻOB, took control of the Ghetto. They built dozens of fighting posts and executed a number of Nazi collaborators, including Jewish Police officers, members of the fake (German-sponsored and controlled) resistance organization Żagiew, as well as Gestapo and Abwehr agents (such as Judenrat member Dr Alfred Nossig, executed on 22 February 1943). The ŻOB established a prison to hold and execute traitors and collaborators. Józef Szeryński, former head of the Jewish Ghetto Police, committed suicide.

April to May 1943

On 19 April 1943, on the eve of Passover, the police and SS auxiliary forces entered the Ghetto. They were planning to complete the deportation action within three days, but were ambushed by Jewish insurgents firing and tossing Molotov cocktails and hand grenades from alleyways, sewers, and windows. The Germans suffered casualties and their advance bogged down. Two of their combat vehicles (an armed conversion of a French-made Lorraine 37L light armored vehicle and an armored car) were set on fire by insurgent petrol bombs. Following von Sammern-Frankenegg's failure to contain the revolt, he lost his post as the SS and police commander of Warsaw. He was replaced by SS-Brigadeführer Jürgen Stroop, who rejected von Sammern-Frankenegg's proposal to call in bomber aircraft from Kraków and proceeded to lead a better-organized and reinforced ground attack.

The longest-lasting defense of a position took place around the ŻZW stronghold at Muranowski Square, where the ŻZW chief leader, Dawid Moryc Apfelbaum, was killed in combat. On the afternoon of 19 April, a symbolic event took place when two boys climbed up on the roof of a building on the square and raised two flags, the red-and-white Polish flag and the blue-and-white banner of the ŻZW. These flags remained there, highly visible from the Warsaw streets, for four days. After the war, Stroop recalled:

"The matter of the flags was of great political and moral importance. It reminded hundreds of thousands of the Polish cause, it excited them and unified the population of the General Government, but especially Jews and Poles. Flags and national colours are a means of combat exactly like a rapid-fire weapon, like thousands of such weapons. We all knew that – Heinrich Himmler, Krüger, and Hahn. The Reichsfuehrer [Himmler] bellowed into the phone: 'Stroop, you must at all costs bring down those two flags!'"

—Jürgen Stroop, 1949

During this fight on April 22, SS officer Hans Dehmke was killed when gunfire detonated a hand grenade he was holding. When Stroop's ultimatum to surrender was rejected by the defenders, his forces resorted to systematically burning houses block by block using flamethrowers and fire bottles, and blowing up basements and sewers. "We were beaten by the flames, not the Germans," Edelman said in 2007. In 2003, he recalled: "The sea of flames flooded houses and courtyards. ... There was no air, only black, choking smoke and heavy burning heat radiating from the red-hot walls, from the glowing stone stairs." The "bunker wars" lasted an entire month, during which German progress was slowed.

While the battle continued inside the Ghetto, Polish resistance groups AK and GL engaged the Germans between 19 and 23 April at six different locations outside the Ghetto walls, firing at German sentries and positions. In one attack, three units of the AK under the command of Captain Józef Pszenny ("Chwacki") joined up in a failed attempt to breach the Ghetto walls with explosives. Eventually, the ŻZW lost all of its commanders and, on 29 April, the remaining fighters from the organization escaped the Ghetto through the Muranowski tunnel and relocated to the Michalin forest. This event marked the end of significant fighting.

At this point, organized defense collapsed. Surviving fighters and thousands of remaining Jewish civilians took cover in the sewer system and in the many dugout hiding places hidden among the ruins of the Ghetto, referred to as "bunkers" by Germans and Jews alike. The Germans used dogs to look for such hideouts, then usually dropped smoke bombs down to force people out. Sometimes they flooded these so-called bunkers or destroyed them with explosives. On occasions, shootouts occurred. A number of captured fighters—especially the women—lobbed hidden grenades or fired concealed handguns after surrendering. There were also clashes between small groups of insurgents and German patrols at night.

On May 8, the Germans discovered a large dugout located at Miła 18 Street, which served as ŻOB's main command post. Most of the organization's remaining leadership and dozens of others committed a mass suicide by ingesting cyanide. They included the chief commander of ŻOB, Mordechaj Anielewicz. His deputy Marek Edelman escaped the Ghetto through the sewers with a handful of comrades two days later.

On May 10, a Bundist member of the Polish government in exile, Szmul Zygielbojm, committed suicide in London to protest the lack of reaction from the Allied governments. In his farewell note, he wrote:

"I cannot continue to live and to be silent while the remnants of Polish Jewry, whose representative I am, are being murdered. My comrades in the Warsaw ghetto fell with arms in their hands in the last heroic battle. I was not permitted to fall like them, together with them, but I belong with them, to their mass grave. By my death, I wish to give expression to my most profound protest against the inaction in which the world watches and permits the destruction of the Jewish people."

The suppression of the uprising officially ended on 16 May 1943, when Stroop personally pushed a detonator button to demolish the Great Synagogue of Warsaw. Sporadic resistance continued and the last skirmish took place on 5 June 1943 between Germans and a holdout group of armed Jews without connections to the resistance organizations.

Death toll

13,000 Jews were killed in the ghetto during the uprising (some 6,000 among them were burnt alive or died from smoke inhalation). Of the remaining 50,000 residents, most were captured and shipped to concentration and extermination camps, in particular to Treblinka.

Jürgen Stroop's internal SS daily report for Friedrich Krüger, written on 16 May 1943, stated:

"180 Jews, bandits and sub-humans, were destroyed. The former Jewish quarter of Warsaw is no longer in existence. The large-scale action was terminated at 20:15 hours by blowing up the Warsaw Synagogue. ... Total number of Jews dealt with 56,065, including both Jews caught and Jews whose extermination can be proved. ... Apart from 8 buildings (police barracks, hospital, and accommodations for housing working-parties) the former Ghetto is completely destroyed. Only the dividing walls are left standing where no explosions were carried out."

According to the casualty lists in Stroop's report, German forces suffered a total of 110 casualties - 17 dead (of whom 16 were killed in action) and 93 injured - of whom 101 are listed by name, including over 60 members of the Waffen-SS. These figures did not include Jewish collaborators, but did include the Trawniki men and Polish police under his command. The real number of German losses, however, may be well higher (the Germans suffered about 300 casualties by Edelman's estimate). For propaganda purposes, the official announcement claimed the German casualties to be only a few wounded, while propaganda bulletins of the Polish Underground State announced that hundreds of occupiers had been killed in the fighting.

Aftermath

After the uprising was over, most of the incinerated houses were razed, and the Warsaw concentration camp complex was established in their place. Thousands of people died in the camp or were executed in the ruins of the Ghetto. At the same time, the SS were hunting down the remaining Jews still hiding in the ruins. On 19 April 1943, the first day of the most significant period of the resistance, 7,000 Jews were transported from the Warsaw Ghetto to Treblinka extermination camp, where, purportedly, they developed again into resistance groups, and then helped to plan and execute the revolt and mass escape of 2 August 1943.

In October 1943, Bürkl was tried and condemned to death in absentia by the Polish Resistance's Special Courts, and shot dead by the AK in Warsaw, a part of Operation Heads targeting notorious SS officers. That same month, von Sammern-Frankenegg was killed by Yugoslav Partisans in an ambush in Croatia. Himmler, Globocnik and Krüger all committed suicide at the end of the war in Europe in May 1945. Stroop was captured by Americans in Germany, convicted of war crimes in two different trials (U.S. military and Polish) and executed by hanging in Poland in 1952 along with Warsaw Ghetto SS administrator Franz Konrad. Stroop's aide, Erich Steidtmann, was exonerated for "minimal involvement"; he died in 2010 while under investigation for war crimes. Hahn went into hiding until 1975, when he was apprehended and sentenced to life for crimes against humanity; he died in prison in 1986. Walter Bellwidt, who commanded a Waffen-SS battalion among Stroop forces, died on October 13, 1965.

The Warsaw Ghetto Uprising of 1943 took place over a year before the Warsaw Uprising of 1944. The Ghetto had been totally destroyed by the time of the general uprising in the city, which was part of the Operation Tempest, a nationwide insurrection plan. During the Warsaw Uprising, the AK's Battalion Zośka was able to rescue 380 Jewish prisoners (mostly foreign) held in the concentration camp "Gęsiówka" set up by the Germans in an area adjacent to the ruins of former Ghetto. These prisoners had been brought from Auschwitz and forced to clear the remains of the ghetto. A few small groups of Ghetto residents also managed to survive in the undetected "bunkers" and to eventually reach the "Aryan side". In all, several hundred survivors from the first uprising took part in the later uprising (mostly in non-combat roles such as logistics and maintenance, due to their physical state and general shortage of arms), joining the ranks of the AK and the AL. According to Samuel Krakowski from the Jewish Historical Institute, "The Warsaw Ghetto Uprising had a real influence ... in encouraging the activity of the Polish underground."

A number of survivors of the Warsaw Ghetto Uprising, known as the "Ghetto Fighters," went on to found the kibbutz Lohamei HaGeta'ot (literally: "Ghetto Fighters'"), which is located north of Acre, Israel. The founding members of the kibbutz include Yitzhak Zuckerman (Icchak Cukierman), who represented the ŻOB on the 'Aryan' side, and his wife Zivia Lubetkin, who commanded a fighting unit. In 1984, members of the kibbutz published Daphei Edut ("Testimonies of Survival"), four volumes of personal testimonies from 96 kibbutz members. The settlement features a museum and archives dedicated to remembering the Holocaust. Yad Mordechai, a kibbutz just north of the Gaza Strip, was named after Mordechaj Anielewicz. In 2008, Israel Defense Forces Chief of Staff Gabi Ashkenazi led a group of IDF officials to the site of the uprising and spoke about the event's "importance for IDF combat soldiers."

On 7 December 1970, West German Chancellor Willy Brandt spontaneously knelt while visiting the Monument to the Ghetto Heroes memorial in the People's Republic of Poland. At the time, the action surprised many and was the focus of controversy, but it has since been credited with helping improve relations between the NATO and Warsaw Pact countries.

In 1968, the 25th anniversary of the Warsaw ghetto uprising, Zuckerman was asked what military lessons could be learned from the uprising. He replied:

"I don’t think there’s any real need to analyze the Uprising in military terms. This was a war of less than a thousand people against a mighty army and no one doubted how it was likely to turn out. This isn’t a subject for study in military school. (...) If there’s a school to study the human spirit, there it should be a major subject. The important things were inherent in the force shown by Jewish youth after years of degradation, to rise up against their destroyers, and determine what death they would choose: Treblinka or Uprising."

Controversy

In recent years, a new research by historians Dariusz Libionka (Poland) and Laurence Weinbaum (Israel) on the ŻZW has called into question the validity of what has been written on the Revisionist Zionist underground that fought in the ghetto. Their monograph (Bohaterowie, hochsztaplerzy, opisywacze) cast new light on some of the Polish and Jewish accounts retold by those who wrote about the revolt. Over the years these testimonies found their way into many secondary sources – both popular and scholarly works by other authors – as well as reference books. The research by Libionka and Weinbaum attempted to deconstruct and discredit the testimony of Henryk Iwański and two others who claimed to have fought in the ranks of the organization or aided it. Libionka and Weinbaum maintain that Dawid Moryc Apfelbaum, who is often credited with having played a commanding role in the ŻZW, and for whom a square was named in Warsaw, was in all likelihood an entirely fictitious figure, a product of fałszywka (political forgery).

Nevertheless, the stories of Apfelbaum and Iwański as heroic combatants of the Ghetto, continue to be the focus of commemorations. In Israel, on the 70th anniversary of the uprising, a new edition of the 1963 book on the ŻZW written by Chaim Lazar-Litai was published, and retold the story of Iwański's and Apfelbaum's commanding role in the ŻZW. The retired Israeli politician Moshe Arens, who has also written widely on the ŻZW and the Warsaw Ghetto, contributed a foreword to the new edition.