Definitions for "Field of fire"
Keywords:  weapons, swept, trek, fire, seventh
A clear field for defensive fire around a military installation. All vegetation having been destroyed around a base so that attackers could readily be seen and thus vulnerable to returning fire.
The area that a weapon or group of weapons covers effectively with fire.
area within weapons range that can be seen and swept by fire. Fields of fire were often improved by slashing (cutting down) all of the trees or pulling down buildings in front of the line.