In the Libyan Desert, where fighting has been continuous, since 1940, fire power has been a decisive factor, and artillery has played an important role in its development. Guns have halted tanks and infantry; guns of all calibers--motor-drawn, self-propelled, portee, and mounted in tanks--have enabled large advances to be made by both sides. Although the primary purpose here is to describe the employment of the artillery's fire power, the broader picture of desert operations, especially insofar as they relate to German tactics, is included as having an important bearing on the whole subject.