August 1968: Warsaw Pact tanks invade Prague

Anatoly Babi was born in what was the Soviet republic of Kirgizia. This photograph was taken during his compulsory two years in the Soviet Army Photograph: Anatoly Babi

A fellow Soviet officer in Czechoslovakia Photograph: Anatoly Babi

Anatoly Babi with his lorry containing radar equipment in Czechoslovakia Photograph: Anatoly Babi

Soviet soldiers in the Czech forest during the operation to put down the Prague Spring Photograph: Anatoly Babi

Warsaw Pact tanks invade Prague. People are depicted going about their daily business as the tanks sit just a short distance from them Photograph: Jan and Bohumil Hajny/Jan and Bohumil Hajny

A truck burns as the tanks move in to the captial. More than 100 people were killed in the conflict Photograph: Jan and Bohumil Hajny/Jan and Bohumil Hajny

Soviet soldiers sit on tanks as they head towards the radio station in the centre of the city in a bid to shut down communications Photograph: Jan and Bohumil Hajny/Jan and Bohumil Hajny

More tanks roll down the paved streets Photograph: Jan and Bohumil Hajny/Jan and Bohumil Hajny

Smoke bellows through Prague Photograph: Jan and Bohumil Hajny/Jan and Bohumil Hajny

Soldiers and civilians survey the damage Photograph: Jan and Bohumil Hajny/Jan and Bohumil Hajny