Liberation of the Crimea from the Nazis started on the 8th of April, 1944 and already in April, 16 Soviet troops reached the main defence line of the enemy near Sevastopol. Closer to the city the Germans created powerful multi-layered defence where the key position was occupied by Sapun mountain. On its steep slopes the Germans made 3-4 trench lines, built
pillboxes, earth-and-timber emplacements, reinforced concrete shelters, made barbed wire entanglements, and turned the valley at the mountain foot into a mine field. Hitler's command was to hold Sevastopol at any cost, they thought that for the Soviets it would be equally hard to take it back as it had been for the Germans two years earlier.
Defence of Sevastopol in 1941-42 that lasted 250-days became one of the brightest pages of the WWII history. Defenders of the Black Sea fleet main base frustrated the plans of the German command to proceed to the Caucasus
and influenced the course of the way. The 30th and 35th turret batteries played important roles in Sevastopol defence, they became the main artillery power that inflicted considerable losses of the Germans.