Which of the following terms describes the action of moving troops in a strategic manner?

The term that describes the action of moving troops in a strategic manner is "maneuver." This term specifically refers to the tactical and strategic movement of forces to gain an advantage over the enemy, optimize positioning, or effectively respond to changing circumstances on the battlefield. Maneuvering can involve various actions, such as advancing towards an objective, flanking an enemy position, or repositioning troops to strengthen defense or counteract threats.

In contrast, retreat pertains to withdrawal from a position, often due to overwhelming opposition or to regroup. Surrender indicates the cessation of hostilities and the acceptance of defeat, while defend describes actions taken to resist an attack or protect a position. These terms all describe various responses in military operations but do not encapsulate the strategic movement of troops in the same way that "maneuver" does. Thus, "maneuver" accurately captures the essence of the question regarding strategic troop movement.