What is the third method for a tank platoon to engage and destroy the enemy?

Maneuver is the third method for a tank platoon to engage and destroy the enemy because it focuses on the tactical movement of forces to gain a positional advantage over the adversary. In armor operations, maneuvering allows for the exploitation of terrain features, flanking positions, and the ability to bypass obstacles or threats, enabling the platoon to enhance their combat effectiveness and surprise the enemy. This dynamic approach can help avoid strong enemy positions and achieve decisive engagement.

Concealment protects the force from detection, allowing for undetected movement; however, it does not in itself engage the enemy. Observation is critical for understanding the enemy's location and actions, informing the tank platoon about potential threats and opportunities, but it is primarily a preparatory step rather than a method of engagement. The assault method involves an aggressive attack meant to seize objectives directly. While both maneuver and assault are important, in the context of the question specifically, maneuver as a method encompasses broader tactical concepts beyond straightforward assault, making it the correct choice.