strength of a thousand men
Figurative expression for overwhelming power or support, as if backed by a thousand people. Often used in phrases like 千人力を得る or 千人力の味方.
With him on our side, I feel like we've gained the strength of a thousand men.
soldier's charm cloth
Historical item: a cloth inscribed with the character 力 (strength) by a thousand soldiers, carried as a protective talisman. Rarely encountered outside historical or cultural contexts.
During the war, soldiers carried a charm cloth inscribed with 'strength' by a thousand men.