1-30. The most effective leaders adapt their approach to the mission, the organization, and the situation. A division commander addressing brigade commanders before conducting large-scale combat operations leads and communicates differently than a drill sergeant training new recruits in basic training. Constant change affects peacetime and combat operations. Personnel change out. Timelines move. Anticipated resources do not materialize. Adversaries do what was least expected. Weather keeps CAS assets grounded. Commanders, leaders, and staffs plan for possible changes and continually monitor progress to engage as needed. Leaders account for the important factors affecting the dynamics of leadership. Three consistent factors are—