26 November 2025

Transition Period Warfare: How the US Army Should Organize to Fight in a Time of Rapid Change

Joshua Suthoff

Military leaders and analysts consistently highlight the importance of predicting what the future formation should look like to win the next war. Current conflict areas and the rise of drones highlight the need for professional militaries to adapt to remain relevant against evolving threats. The Army Transformation Initiative and its transformation in contact efforts continue to expedite changes in organization and equipping. However, key to the US Army maintaining relevancy is how it adapts the division, as the unit of action, along with its subordinate brigades. Although the division formation has seen some recent organizational changes with artillery, engineers, and sustainment, key and most critical is the lethality of the division headquarters and assigned combat brigades. The speed of drone evolution, supported by AI, is uncomfortable for professional armies. This discomfort is exacerbated when considering procurement times and reliance on traditional combat-tested formations or tactics. This fear is reinforced by the idea that professional Western armies, like that of the United States, will successfully execute maneuver warfare in the new drone-infested operating environment. The sheer size and mass of US Army divisions and brigades is considerable, making them inviting targets for an enemy commander’s kill web. One combat principle remains true: Making contact with the smallest element possible limits vulnerability, and this applies from the squad to the division level. Today, a corollary to that imperative has emerged: That smallest element must be a drone-enhanced unit.

Assuming divisions will be able to rapidly transition from movement to maneuver under contact for the first time in decades without significant friction and casualties is unrealistic. Division-level maneuver is never rehearsed outside of a combined arms rehearsal or digital warfighter exercise. Current exercise design and training environments do not adequately recreate the enemy kill web possible on the modern battlefield. Attempts at innovation at the division level are capability focused, without deep thought on the organizational structures that most effectively employ new capabilities. Despite these shortcomings, there is an opportunity to experiment and learn across formations now.

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