What publication provided training instructions for non-commissioned officers in 1829?

The correct answer, "The Abstract of Infantry Tactics," is significant because it was an influential publication that laid out the instructions for the training of non-commissioned officers during its time. Published in 1829, it provided foundational tactics that shaped how infantry were organized and managed during military engagements. This manual provided key guidance on formations, movements, and the overall conduct during drills and operations, which were critical for the effectiveness and discipline of infantry units.

As history shows, the role of non-commissioned officers is pivotal in maintaining order and executing plans in the field, and this text was among the earliest dedicated resources to support their training and development. The information within this publication helped cultivate leadership skills and tactical knowledge, essential for the growth of effective non-commissioned officers in the Army.