A military tactic of using large numbers of people to overwhelm the enemy (a 'human wave' attack).
戦史では人海戦術がしばしば大量の犠牲を生んだと記されている。
Military histories note that human wave tactics often produced heavy casualties.
彼らは補給線が脆弱な相手に対して人海戦術を用いた。
They used human wave tactics against an opponent with weak supply lines.
Figuratively, repeatedly throwing people at a problem—solving issues by using a large workforce rather than technology or efficiency.
工期が迫り、人海戦術で作業員を増やして進めた。
With the deadline looming, they increased workers and pushed forward with a manpower-heavy approach.
単純作業を人海戦術で片づけるより、自動化を検討したほうがいい。
Rather than clearing simple tasks with a manpower-heavy approach, it's better to consider automation.