In what year was the Army's first leadership doctrine published?

The Army's first formal leadership doctrine was published in 1948. This document marked a significant development in military leadership principles, establishing foundational concepts that would guide Army leaders in their responsibilities and interactions with soldiers. By formally codifying these leadership principles, the Army aimed to create a structured approach to leadership that emphasized the importance of ethical conduct, accountability, and the relationship between leaders and their subordinates. The year 1948 is seen as a pivotal moment in Army history, setting the stage for future iterations and refinements of leadership doctrine that would evolve over subsequent decades.