sentences:  In late February 1920, the Red Army renewed its attacks and succeeded in forcing the Whites to abandon the North Caucasus.Amid a disastrous evacuation at Novorossiysk, tens of thousands of Volunteer and Don Cossack troops did manage to embark on ships that transported them safely to the Crimean Peninsula.But due to insufficient tonnage, an even greater number of Cossack soldiers and civilians fleeing with the Whites were left behind at Novorossiysk where they were forced to either surrender or continue to retreat south.