1940–1944 insurgency in Chechnya

But our fervent belief in justice and our faith in the support of the freedom-loving peoples of the Caucasus and of the entire world inspire me toward this deed, in your eyes impertinent and pointless, but in my conviction, the sole correct historical step.

"[8][9]After the German invasion in the USSR in June 1941, the brothers convened 41 different meetings in summer 1941 to recruit local supporters under the name "Provisional Popular Revolutionary Government of Chechen-Ingushetia", and by the end of midsummer of that year they had over 5,000 guerrillas and at least 25,000 sympathizers organized into five military districts encompassing Grozny, Gudermes and Malgobek.

[4] Massive Soviet bombing air raids twice targeted Chechen-Ingush mountain villages in the spring of 1942, completely devastating several auls and killing most of their inhabitants, including large numbers of elderly and children.

Hasan also developed a code among the guerrilla fighters to maintain order and discipline, which stated: Brutally avenge the enemies for the blood of our native brothers, the best sons of the Caucasus; Mercilessly annihilate seksoty [secret agents], agents and other informants of the NKVD; Categorically forbid [guerrillas] to spend the night in homes or villages without the security of reliable guards.

[10] On August 25, 1942, nine German-trained saboteurs from Abwehr's Nordkaukasisches Sonderkommando Schamil landed near the village of Berzhki in the area of Galashki, where they recruited 13 local Chechens for their cause.

[citation needed] Their mission was to seize the Grozny petroleum refinery in order to prevent its destruction by the retreating Soviets, and to hold it until the German First Panzer Army arrived.

"[14] By 1943, as the Germans began to retreat in the Eastern Front, the mountain guerrillas saw their fortunes change as many former rebels defected to the Soviets in exchange for amnesty.

After the German retreat from the Caucasus, almost 500,000 Chechen and Ingush people from Checheno-Ingushetia as well as other republics were forcibly resettled to Siberia and Central Asia (mostly to Kazakhstan SSR) en masse, resulting in a large number of deaths among the deportees.

In mountainous regions of the country, mass atrocities such as the Khaibakh massacre are claimed to have taken place (although the evidence on this incident is in doubt and has been questioned by scholars).

Many died along the trip, and the extremely harsh environment of Siberia as well as of other regions the people were deported to (especially considering the amount of exposure) killed many more.

The NKVD, supplying the Soviet perspective, gives the statistic of 144,704 people killed in 1944–1948 alone (death rate of 23.5% per all groups), though this is dismissed by many authors such as Tony Wood, John B. Dunlop, Moshe Gammer and others as a gross understatement.