What do you do when the runways you thought secure can be seen from space and struck from hundreds of miles away? That question forced a doctrinal rethink inside the U.S. Air Force beginning in 2021, and the answer was Agile Combat Employment — a concept that turns the logic of large, permanent air bases on its head and asks aircraft, aircrews and sustainers to be ready to operate from dozens of smaller, temporary sites instead of a few sanctuaries.
Agile Combat Employment, or ACE, is not a single technology or platform upgrade. It is a way of operating designed to blunt the potency of modern anti-access/area-denial (A2/AD) architectures: long-range precision fires, space-enabled sensing, and cyber and electronic warfare tools that can expose and paralyze concentrated airpower. ACE emphasizes dispersal, mobility, redundancy and the authority to make fast decisions at lower echelons so that airpower can survive, move and fight even after adversaries open the battlespace with sophisticated targeting and fires .
At its core, ACE weaves together several practical elements that affect how aircraft are prepared and sustained:
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Dispersed basing — spreading aircraft and support across many locations to complicate enemy targeting and increase the number of potential launch points.
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Expeditionary logistics — prepositioned supplies, palletized maintenance kits, and smaller sustainment packages that allow maintainers to service aircraft outside traditional hangars.
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Rapid runway repair and austere-site operations — techniques and equipment to repair strips quickly and operate from roads, island strips or other improvised surfaces.
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Resilient communications and decentralized command — redundant networks and devolved authorities to keep distributed forces coordinated under contested electromagnetic conditions .
Implementation has been deliberate and experimental rather than wholesale and immediate. The Air Force has tested ACE in exercises across theaters, with Pacific Air Forces (PACAF) notably leaning into the concept because of geography and the Indo-Pacific security environment. Those experiments stress-test logistical tradeoffs, command relationships and the ability of maintainers to generate sorties with a smaller footprint and thinner logistical tail .
Why this matters is simple and stark. The strategic environment shifted: near-peer competitors increasingly field systems that can detect, track and strike airbases at distance. If airfields are no longer safe, concentrating assets at a handful of hubs becomes a vulnerability, not strength. Dispersal under ACE raises the targeting cost for adversaries, preserves operational tempo after initial attacks, and complicates an opponent’s calculus when allocating scarce long-range munitions .
But ACE is also a hard test of organizational and industrial elasticity. The concept moves complexity from centralized bases into many small teams: maintainers must be trained to perform work in austere conditions, supply chains must support numerous small nodes instead of a few large depots, and command-and-control systems must operate across contested electromagnetic environments. Those requirements strain doctrine, budget priorities and procurement timelines — all while legacy practices and infrastructure remain optimized for the old model of large, well-supported hubs .
Technologists see opportunity and risk. Modular maintenance shelters, additive manufacturing (3D printing), autonomous ground vehicles and predictive maintenance tools could shrink the footprint required to keep aircraft ready and accelerate turnarounds in the field. At the same time, those same networked enablers increase cyber attack surfaces; a dispersed force that depends on digital logistics and sensing must defend more access points and protect against denial, deception and intrusion .
Policymakers confront tradeoffs. Investing in ACE-compatible capabilities — expeditionary fuel systems, palletized munitions handling, mobile maintenance, and resilient communications — competes with other modernization programs. There is also a political and diplomatic dimension: ACE means operating from more locations, sometimes closer to other nations’ territories or within host-nation constraints, which can create friction in peacetime and complexity in crisis.
Pilots and maintainers, the daily users, face cultural and practical adjustments. Flying and sustaining aircraft from austere sites changes risk profiles and routines. Maintenance protocols, supply pacing and safety procedures must be adapted to environments where shelter, heavy equipment and runway-crane support are not guaranteed. Training pipelines are already shifting to teach expeditionary skills once reserved for specialized units, but scaling that training across the force takes time and resources .
From an adversary’s perspective, ACE complicates targeting and may force the diversion of expensive long-range fires across a wider area. That diffusion of target value is a strategic goal for defenders. Yet the dispersed model can also create new tactical opportunities for an opponent who can surveil and find weak nodes; ACE thus creates a cat-and-mouse dynamic where concealment, deception and electromagnetic denial become as important as physical hardening.
Operational experiments so far suggest ACE is viable but incomplete. Exercises in the Pacific and Europe have highlighted both successes in rapid turnarounds and gaps in sustainment when many small sites require simultaneous resupply. The Air Force’s approach has been iterative: test, learn, and adjust doctrine and acquisition accordingly. That prudence recognizes ACE is not a silver bullet but a doctrinal hedge — a set of practices that increase the survivability of airpower in a future contested fight if matched by investments in logistics, training and resilient networks .
There are clear risks to underfunding the enablers of ACE. Without prepositioned stocks, palletized maintenance, and robust alternate communications, dispersion can become dispersion without sustainment — aircraft moved to many locations but unable to fly enough sorties because of parts shortages, degraded maintenance throughput, or broken command links. Conversely, an overemphasis on ACE at the expense of modern sensors, long-range strike, or air superiority capabilities would be equally unwise: ACE must complement, not replace, other pillars of airpower.
In the end, ACE is a reflection of an enduring military truth: tactics change in response to changing threats, but those tactics succeed only if institutions, supply chains and people change with them. The Air Force’s shift toward distributed, expeditionary operations accepts that the next fight will favor flexibility and redundancy as much as raw mass. As the service continues to test and refine ACE, the central question remains political and fiscal as well as operational: will the nation sustain the long-term investments required to make dispersed, resilient airpower a reality?
If the future of air warfare rewards those who can hide, move and repair faster than their opponents can sense and strike, the next challenge is no longer merely technical — it is organizational. Can the Air Force and its partners change habits, procurement and training fast enough to give pilots and maintainers the tools they need to keep aircraft flying in a contested sky?
Source: https://modernbattlespace.com/2025/03/05/the-u-s-air-forces-ace-concept-preparing-aircraft-for-the-new-reality/
