What term describes the arrangement and maneuver of units in relation to each other, terrain, and enemy?

The term that describes the arrangement and maneuver of units in relation to each other, terrain, and enemy is tactics. Tactics involve the specific methods and techniques used during operations to achieve objectives on the battlefield. This includes how units are positioned, how they move in response to the enemy's actions and the terrain they are operating in.

In a military context, understanding tactics is crucial for effective engagement and can determine the success or failure of a mission. It encompasses both the immediate actions taken by forces in combat scenarios and the planning of those actions to optimize effectiveness against specific threats or challenges. This focus on the direct interactions and immediate environment distinguishes tactics from broader concepts like strategy, which deals with long-term planning and overarching goals, or logistics, which pertains to the supply and support necessary for operations. Operations, while related, refers more to the execution of campaigns and the coordination of multiple tactical engagements over time.