The first to copy tunnel warfare were the Japanese themselves.

Tunnel warfare is a general name for the war being conducted in tunnels and other underground cavities.

The stalemate situation in the early part of the war led to the deployment of tunnel warfare.

In the Korean War, the tactic of tunnel warfare was employed by the Chinese forces themselves.

This melds the defensive tunnel warfare with mobile warfare.

The battle was also noted for the pioneering use of tunnel warfare by the Chinese in the Korean War.

Japanese trench and tunnel warfare continued.

They began training an elite group of volunteers in the art of tunnel warfare, armed only with a gun, a knife, a flashlight and a piece of string.

The term tunnel war or tunnel warfare (地道战) was first used for the guerrilla tactic employed by the Chinese in the Second Sino-Japanese War.

"The Chinese resort to tunnel warfare, and the devastating losses to American soldiers, led to the sealing of tunnel entrances by United Nations Command.

Shaping Operational Design: A Counter to the Growing Trend of Underground Facilities and Tunnel Warfare.

Tunnel warfare by the Japanese forced the US Marines to adopt the "blowtorch and corkscrew" tactics to systematically flush out the Japanese defenders, one cave at a time.

Deploying listeners in different tunnels in triangulation techniques, by the end of 1916 the scale of British tunneling warfare had expanded to such an extent that there were not enough listeners to man every post; central listening stations were devised.

For the moment, that action represents a relatively unproductive, even pointless application of my firepower, especially since I would still need a team of either hunter-killer robots or human engineers and tunnel warfare experts to penetrate the tunnel system to any worthwhile tactical extent.