Jewish underground fighters were hospitalized under fictitious names to keep the British mandatory police from finding them.

Scores of underground fighters laid down their arms.

It was the first time a large number of underground fighters had met openly, and the collaboration between the groups increased their sense of solidarity.

A railway bridge was destroyed by Jewish underground fighters prior to 1948 during the Night of the bridges operation.

Soon after his capture, he began to develop a basic understanding of the Polish language, which made him very useful to Polish underground fighters.

For another twelve hours after the shuttle took off, the underground fighters left behind would keep up appearances.

Explosions on the roof of the building meant that the underground fighters had managed to destroy the communications system of the complex.

The soldier started to move toward the other manned emplacement, then saw a pair of underground fighters overwhelm the gunner.

There were also the two hundred "underground" fighters already inside the Tower of the Serpent.

He was freed by the French Resistance and became an underground fighter.