What does total annihilation mean?

Total annihilation: sweeping: sweeping, sweeping. Sweeping away a large number of enemy troops in a short time like sweeping the floor also describes poetry and calligraphy as magnificent and full of charm.

From Tang Du Fu's Drunken Song: "Ci originated from the Three Gorges, and swept a thousand troops alone."

For example, on the fifteenth day of the 700-mile long drive, Jiangxi's waters were vast, Fujian's mountains were green, and thousands of troops were swept away.