Mines placed in their way prevented Russian troops from advancing toward the rebels' firing positions.

Local militia aided by Indian allies successfully prevented British troops from landing.

The thick fog might have been the only thing preventing Russian troops from cutting off all remaining roads.

Even the water for the swimming pools was cooled to prevent troops from being scalded during training or recreation.

For ten months she carried out surveillance to prevent troops and supplies from getting into South Vietnam.

Tenth Army had succeeded in preventing troops being cut off, and continuing the battle would just invite heavy losses.

Tough security restrictions prevent troops from going into Riyadh except on official business.

For the last two weeks, hundreds of protesters have prevented Russian troops from entering Orahovac to serve as peacekeepers there.

Soviet troops prevent Iranian troops from getting involved.

Fighter jets were reported to have targeted army ammunition depots in order to prevent troops from joining the protesters.