If an enemy approaches, it is from the walls of the jungle that we meet and strike them before they can reach us.

They rarely spoke, and instead practiced hand signals that would be used to relay word of the enemy approach, if the attack came during the day.

Fort Griswold's guns were fired twice, a signal of enemy approach.

"Bless me, sir," said the captain, "take care of yourself, the enemy approaches."

A loud rumbling can be heard as the enemy approaches.

Some are equipped with special electronic gear for detecting submarines, such as sonar, and others can give early warnings of enemy approach.

Jivdhan to Naneghat has an open field of 2-3 km, which gives any clear indication of enemy approach.

The cruiser was completely unaware of the enemy approach.

By the direction from which the enemy approaches, they may not spot our men till too late.

B'Elanna Torres asked, immediately looking to the sides as if to check an enemy approach.