What is the first step in the chronological order of EA DEV?

The first step in the chronological order of Enemy Activity Development (EA DEV) is to identify all likely enemy avenues of approach (AoA). This step is crucial as it lays the foundation for understanding how the enemy is likely to maneuver toward friendly positions. By identifying these roads, paths, and routes that the enemy may use, commanders gain insight into potential strengths and weaknesses in their defenses, allowing them to better anticipate enemy actions.

Once the likely avenues of approach are established, planners can effectively develop their operational plan. This identification informs subsequent steps such as planning obstacles and positioning assets to counter the enemy’s movements. Understanding the enemy's possible pathways is essential for creating a comprehensive strategy, ensuring that all other actions taken are based on a solid understanding of the battlefield dynamics.