The room contained nothing but old account books, which made a hot and effective fire.

The whole range of effective fire was only a thousand yards or a very little over.

There was still not enough visibility to bring effective fire on the advancing Arabs without a risk of hitting his own people.

If there was any effective fire from those trucks, it wasn't evident.

What made the aliens' fire so damned effective against them?

This makes it a highly effective fire fighting agent that is safe for people and causes no damage to equipment.

The soldiers were not able to return an effective fire from their horses, and had no time to dismount.

They were only about two hundred fifty meters out in three separate areas, so it was easy enough to bring effective fire on them.

Almost immediately it came under effective fire and two men were killed, while another was wounded.

Even in our own universe we're much too fast for any effective fire.