At around 3.00 pm the party heard the sound of cannon fire from the west.

There was an exchange of cannon fire for over three hours.

But for the first two and a half hours, it was simply an exchange of cannon fire.

They were held at bay by threat of cannon fire.

Then came the sounds of cannon fire in the distance.

Once asleep, the woman could sleep through cannon fire, as he well knew.

Mars paid no attention to the cannon fire behind him.

The sound of cannon fire would soon create a very difficult emotion in a city under attack.

I knew we couldn't have hurt the enemy that much with the cannon fire.

Even as she said this, there was another burst of cannon fire.