Which quote suggests that without air power, no major war can be won?

The assertion that "Today air power is the dominant factor in war" emphasizes the critical role of aerial capabilities in modern warfare. This statement encapsulates the idea that air power not only supports ground and naval forces but also plays a pivotal role in shaping the outcome of conflicts. Control of the air can dictate the tempo of operations, enable rapid troop movements, and provide vital intelligence and reconnaissance that ground forces rely upon.

In contemporary military strategy, the absence of air superiority often leads to increased vulnerability for ground and naval operations, hindering their effectiveness and risk management. Therefore, the quote aligns with the understanding that without effective air power, achieving victory in major wars becomes exceedingly difficult, if not impossible.

Other choices, while valuable in their own rights, focus on different aspects of military effectiveness and leadership. The remark about enthusiasm as a "force multiplier" speaks to motivation and morale but does not specifically address the strategic imperative of air power in warfare. Similarly, the observations on character and the purpose of war highlight important principles, but again do not assert the necessity of air power for victory in modern military conflicts.