Which conflict saw the extensive use of the F-111 Aardvark?

The F-111 Aardvark was extensively used during the Vietnam War, primarily for its innovative design that included variable-sweep wings, enabling it to perform well at both high and low speeds. Its capabilities in delivering precision strikes and conducting electronic warfare made it a valuable asset in this conflict, particularly during bombing campaigns against North Vietnam.

The aircraft's ability to navigate in difficult weather conditions and its impressive range allowed for deep penetration strikes into enemy territory, making a significant impact during the war. Notably, F-111s were involved in operations like Linebacker I and II, which were crucial in targeting North Vietnamese defenses.

In contrast, while the Gulf War did see the use of F-111s and they performed well in that context, the question specifically asks for the conflict where their use was more extensive and pivotal, which aligns better with the Vietnam War. World War II and the Korean War did not involve the F-111 since it was developed and introduced later, and thus those conflicts are not relevant to its operational history.