What does AZ refer to in artillery terms?

In artillery terms, AZ refers to Azimuth, which is a crucial concept in the field of cannon operations. Azimuth is the angle between a reference direction (typically true north) and the direction of the artillery piece's barrel, measured in degrees. This measurement is essential for precise aiming and firing of artillery, as it helps determine the correct direction to engage a target.

Artillery pieces must be correctly aligned in terms of azimuth to ensure that munitions are fired accurately and hit the intended targets. Understanding azimuth includes recognizing how to adjust the firing angle, which can be influenced by various factors such as terrain, target distance, and environmental conditions. This fundamental skill is vital for effective artillery support in military operations.

While the other choices involve terminology related to artillery, they do not specifically define the term AZ as accurately as azimuth does, which is why it stands out as the correct answer.