Marine Corps doctrine is based on which type of maneuver?

Marine Corps doctrine emphasizes a maneuver philosophy that is rapid, flexible, and opportunistic. This approach is rooted in the need to adapt to the fluid nature of modern warfare, where the battlefield can change rapidly, and opportunities can arise unexpectedly. By focusing on rapidity, the Marine Corps can respond quickly to threats and exploit weaknesses in adversarial forces.

Flexibility is crucial, allowing Marine units to adjust their tactics and strategies according to real-time developments on the ground. This includes the ability to switch between offense and defense, maneuvering to gain advantageous positions swiftly.

An opportunistic mindset encourages Marines to seize advantages as they present themselves, employing innovative tactics and strategies to overcome challenges and achieve objectives. This doctrine is aligned with the Marine Corps' emphasis on initiative and adaptability, enabling them to maintain operational effectiveness in a variety of complex environments.

The other choices do not capture these elements of Marine Corps doctrine as accurately. Rigid and traditional approaches would limit the ability to adapt, while defensive and cautious strategies might not fully exploit potential advantages. Strategic and planned methods can sometimes miss the dynamic, on-the-spot decision-making essential in modern combat scenarios.