What does the torrent of steel mean?

Soviet Union and Warsaw Pact ground armored forces. According to the query history website, the steel torrent refers to the ground armored forces of the Soviet Union and Warsaw Pact. The Soviet Union is equipped with more than 50,000 tanks, mainly Warsaw Pact, with 68,700 tanks and 77,400 other armored vehicles. Once the war starts, it will become a torrent of steel that impacts NATO on the European plain. This word comes from the cold war period and refers to the confrontation between two major military groups headed by the United States and the Soviet Union.