What are the two principal types of patrols used by the Marine Corps?

The principal types of patrols used by the Marine Corps are combat patrols and reconnaissance patrols. Combat patrols are designed to engage the enemy, gather intelligence on enemy positions, conduct ambushes, and disrupt enemy activities. Their primary goal is to inflict damage and provide tactical advantages in a volatile environment.

On the other hand, reconnaissance patrols focus on gathering information and intelligence without direct contact with the enemy. These patrols help to shape the battlefield by providing critical information about enemy movements, terrain, and other operational factors. This distinction is important because it reflects the varied missions that Marines undertake depending on the operational requirements.

While the other options mention types of patrols, they do not align with the principal functions categorized by the Marine Corps. For example, security patrols concentrate on protecting a specific area or assets, and assault patrols imply a more aggressive approach rather than a structured type. Similarly, supply patrols and support patrols do not encapsulate the broader tactical roles defined by combat and reconnaissance patrols, which are essential for maneuver warfare.