Which of the following is a benefit of having a field manual?

A field manual serves as a comprehensive guide that outlines standardized procedures, techniques, and tactics for various operations, including artillery. By providing a uniform approach to artillery operations, the manual ensures that all personnel are trained on the same principles and methods. This uniformity is crucial in military contexts because it enhances coordination and effectiveness during joint operations, promotes safety, and minimizes confusion among units. A well-defined manual acts as a reference point for training and execution, ultimately leading to more effective and reliable outcomes in the field.

The other answers present ideas that do not align with the primary purpose of a field manual. Focusing solely on psychological aspects of warfare limits the scope of a field manual, which encompasses various operational factors. Reducing the need for training contradicts the fundamental goal of a field manual, which is to serve as a tool for training, preparation, and operational effectiveness. Lastly, advocating for disbanding traditional tactics does not reflect the role of a field manual; rather, it typically seeks to integrate proven tactics with modern strategies to improve overall operational success. Thus, the emphasis on a uniform approach as a benefit of having a field manual stands out as the most accurate depiction of its purpose.