Order No. 227

Soviet postage stamp of April 1945 depicting a politruk throwing a grenade with the phrase "Not a Step Back!".Order No. 227 (Russian: Приказ № 227, romanized: Prikaz No. 227) was an order issued on 28 July 1942 by Joseph Stalin, who was acting as the People's Commissar of Defence. It is known for its line "Not a step back!" (Ни шагу назад!, Ni shagu nazad!), which became the primary slogan of the Soviet press in summer 1942.

Order No. 227 established that each front must create one to three penal battalions (Russian: штрафной батальон, romanized: shtrafnoy batalyon, lit. 'penalty battalion', commonly known as штрафбат, shtrafbat) of up to 800 middle-ranking commanders and high-ranking commanders accused of disciplinary problems, which were sent to the most dangerous sections of the front lines. From 1942 to 1945, a total of 422,700 Red Army personnel were sentenced to penal battalions as a result of courts-martial. The order also directed that each army must create "blocking detachments" at the rear that would shoot "panic-mongers and cowards". In the first three months, blocking detachments shot 1,000 penal troops and sent 24,000 to penal battalions. By October 1942, the idea of regular blocking detachments was unofficially dropped.