It marked the first time that a helicopter assault was used operationally to land troops in an amphibious attack.

More and more focus will be placed on helicopter assaults as opposed to traditional parachute drops.

A helicopter assault would not even have been a gamble, just suicide.

During the latter, two Colossus-class ships performed the first ship-based helicopter assault in history.

This, the first ship-based helicopter assault, was successful, and prompted the development of the amphibious assault ship.

It was a quieter, cleaner and closer method than another helicopter assault.

Shortly after a helicopter assault into a large compound, bin Ladin was identified and killed.

Not everyone on the team was accustomed to helicopter assaults.

European diplomats said today that the European Union planned to condemn the helicopter assault.

In the Persian Gulf war he led a helicopter assault deep into Iraq.