The multitudes come out from their homes, emptying the alleyways to celebrate or attend a grand event; used to describe a sensational occasion or massive public participation.

a large pit used to bury a vast number of bodies together, typically referring to victims of massacres, prisoners, or those who died in a large-scale famine

describes someone with exceptional fighting skill or military leadership who can hold their own against ten thousand enemies

mass grave; common grave

(literary) the strategic knowledge or military tactics needed to defeat ten thousand enemies