Which of the following wars had a greater impact upon NCO role?

The Vietnam War had a significant impact on the role of Non-Commissioned Officers (NCOs) due to the complexities of guerrilla warfare and the need for adaptive leadership in challenging conditions. NCOs were required to take on greater responsibilities, emphasizing decision-making and leadership at lower levels. This shift helped to elevate the status of NCOs within the military hierarchy and has influenced their roles in subsequent conflicts.