Brief
The belief that a wartime footing can multiply munitions output several-fold within months is one of the most persistent misconceptions in defense policy discourse, and it recurs every time a conflict draws down U.S. stockpiles. It resurfaced after the 2022 Russian invasion of Ukraine, again during the 2026 Iran war, and shows up in commentary calling for the United States to simply spend its way out of a shortage. The actual record, compiled across multiple think-tank and Pentagon-sourced assessments, does not support the claim.
Take the case most often cited as a success story: 155mm artillery shell production. Prior to 2022, the U.S. produced roughly 14,000-14,500 shells per month from a single government plant in Scranton, Pennsylvania. By late 2024, output reached 40,000 a month — a real and meaningful increase, but delivered over roughly two and a half years, not months, and still well short of the Army's 100,000-per-month target that was originally set for April 2025. As of June 2025, the Army's own program executive officer for ammunition confirmed production still stood at 40,000 rounds monthly, with the 100,000 goal pushed to early 2026. Complicating the picture further, the 40,000 figure counts projectiles alone; as of the most recent Pentagon reporting cited by Defense Express, only about 18,000 complete rounds (projectile plus propellant charge and fuze) were being finished monthly, because charge and fuze production lagged the shell casings.
The Tomahawk and THAAD cases illustrate the same pattern at the higher end of the complexity scale. War on the Rocks notes that Tomahawk missiles fired during recent operations take months just to put on contract and years to actually produce, and CSIS's mid-2026 inventory tracking shows THAAD interceptor production running at a surge rate of roughly 96 units a year, with Lockheed Martin's expansion plans to reach 400 a year requiring additional facilities and tooling — deliveries to fully replace 2026 Iran-war usage aren't projected to complete until the end of calendar year 2029. This is not a story of failure to try; CSIS notes the U.S. experience surging munitions from 2022 to 2024 showed sharp variation across weapon types, not uniform failure, and every munition that succeeded and every munition that struggled both received comparable crisis-era investment — meaning money invested is not the differentiator between fast and slow ramps.
What actually differentiates ramp speed is where the bottleneck sits in the value chain. A venture-capital value-chain mapping effort covering the U.S. and allied munitions supply base found that the hardest constraints are not at final assembly at all — fifteen of twenty-one identified critical bottlenecks sit in the first half of the chain: raw energetic materials, chemical synthesis, and component qualification. Energetics manufacturing (propellants, explosives like TNT and RDX, nitrocellulose) is governed by handling, transport, and environmental permitting requirements that are measured in years, and once a manufacturing process is certified for military use, changing it requires a testing and certification cycle that can take 18 to 24 months on its own, according to defense industrial-base sourcing. This is why the Pentagon's own acquisition leadership has described a recurring 'boom and bust' cycle across roughly the past 30 years, where U.S. demand and production capacity peak roughly two to three years after a crisis begins and then collapse once the political urgency fades — a pattern that has now repeated about four times, discouraging industry from ever building the standing surge capacity that peacetime economics do not reward.
None of this means surge capacity is impossible or that current U.S. efforts are failing; multiyear procurement authority, new casing plants, and domestic TNT production (ending a decades-long reliance on imports) are genuine structural changes underway since 2022. But the honest baseline for force planners is that meaningful multiplication of output (2-4x, per BCG's tracking of allied systems like PAC-3, GMLRS, and Javelin through 2030) is achievable on a multi-year timeline with sustained demand signals — not months, and rarely an order of magnitude, absent a fundamentally different manufacturing paradigm.
Myths & Realities (6)
Myth
If the Pentagon just adds shifts and overtime at existing plants, munitions output can jump several-fold within months.
Reality
The 155mm shell ramp took roughly two and a half years to go from about 14,000 to 40,000 rounds per month, and even that increase outran the ability to produce matching propellant charges and fuzes, leaving usable complete-round output well below the headline shell number.
Evidence: Multiple sourced accounts of Army 155mm production, including Defense Express reporting citing Pentagon figures showing only about 18,000 complete rounds versus 40,000 projectiles produced monthly.
Kernel of truth: Adding shifts genuinely does raise output at existing lines with existing tooling and qualified inputs — the effect is real, just far smaller and slower than headline claims suggest.
Why believed: Commercial manufacturing intuition (a car factory can add a shift and raise output within weeks) is mistakenly applied to munitions, where energetics chemistry and certification impose hard floors absent in most civilian manufacturing.
Myth
Money is the primary constraint — with enough funding, production capacity follows quickly.
Reality
War on the Rocks' analysis of the 2022-2024 surge found that munitions receiving comparable crisis-era investment showed sharply divergent outcomes: some scaled well, others stagnated despite similar funding, indicating the binding constraint is often not capital availability but structural bottlenecks in energetics, tooling, and qualification.
Evidence: War on the Rocks (2026) direct comparison of munitions that surged successfully versus those that struggled despite similar levels of post-2022 investment.
Kernel of truth: Money is necessary — none of the ramps that did happen would have occurred without sustained multiyear contracts and billions in Organic Industrial Base investment — it is just not sufficient on its own.
Why believed: Politically, funding levels are the most visible and controllable lever, so debates naturally center on budget topline rather than harder-to-legislate structural fixes like permitting reform or workforce pipelines.
Myth
The bottleneck in munitions production is factory capacity — build more plants and the problem is solved.
Reality
A value-chain mapping of the U.S. and allied munitions base found that 15 of 21 identified critical bottlenecks sit in raw energetic materials, chemical synthesis, and qualification steps upstream of final assembly, with none of the hardest constraints located at the assembly line itself.
Evidence: GS Ventures' value-chain analysis of U.S. and allied munitions production, tracing constraints backward from shell assembly through propellants to nitrocellulose and nitroglycerin synthesis.
Kernel of truth: New assembly capacity does matter and has been built — a new automated casing plant opened in Texas and additional shell facilities came online by 2025 — but these additions cannot outrun the slower energetics and qualification chain feeding them.
Why believed: Assembly lines and factories are the visible, photographable part of the production chain (ribbon-cuttings make news); the chemistry and certification steps happen inside plants that rarely get media coverage.
Myth
A wartime footing or crisis declaration can compress years of industrial ramp-up into months, as if flipping a switch.
Reality
Pentagon acquisition leadership has documented a recurring pattern in which U.S. munitions demand and production peak roughly two to three years after a crisis begins — not months — and this timeline has held across roughly four boom-and-bust cycles over the past 30 years.
Evidence: Pentagon acquisition leadership's public remarks describing the historical boom-and-bust pattern in munitions procurement, corroborated by Foreign Policy's 2024 reporting on the same dynamic.
Kernel of truth: Political urgency can and does accelerate contracting speed and multiyear authorizations, which is a genuine input to eventually faster ramps — it just cannot compress the physical chemistry, tooling qualification, and workforce training timelines themselves.
Why believed: World War II-era mobilization history is frequently invoked as precedent, but that mobilization also took years, relied on a much larger pre-existing manufacturing base, and used simpler, less exquisite munitions than today's precision-guided systems.
Myth
Once a shortage is identified, private industry will rationally build standing surge capacity to be ready for the next crisis.
Reality
Private industry has no financial incentive to maintain excess production capacity in peacetime, because demand collapses roughly two to three years after each crisis, and defense contractors have historically declined to invest in capacity without formal, sustained-volume contracts and clear multiyear demand signals.
Evidence: CSIS's assessment that without formal requirements and issued contracts for higher sustained volumes, defense contractors have not risked investing in needed production capacity, and USNI's Proceedings analysis stating private industry has no financial incentive to maintain a commercial arsenal capable of surging to wartime levels.
Kernel of truth: Industry does respond once genuine multiyear demand signals and contracts materialize — the 2022-2026 period saw real private investment (new casing plants, TNT production returning domestically) once the Pentagon issued sustained contracts.
Why believed: Free-market intuition assumes profit-seeking firms will anticipate demand and invest ahead of it, but the boom-bust history of canceled orders and stranded capital has taught contractors the opposite lesson.
Myth
Munitions shortages are mainly explained by weapons transferred to allies like Ukraine, so ending those transfers would resolve the shortfall.
Reality
CSIS assessed that transfers to Ukraine are a minor factor in current U.S. munitions depletion, with the more significant drawdown coming from direct U.S. combat operations — including the 2026 Iran war, strikes against ISIS, and other campaigns — combined with a structural production shortfall predating any single conflict.
Evidence: CSIS's 'Six Reasons Why the United States Is Low on Munitions' (2026), which explicitly frames Ukraine transfers as secondary to direct U.S. operational expenditure and pre-existing institutional underinvestment.
Kernel of truth: Ukraine transfers are real and non-trivial — the DoD's own fact sheet lists over a hundred billion dollars in aid — so they are a genuine contributing factor, just not the dominant one CSIS finds.
Why believed: Ukraine aid is the most politically visible and debated munitions expenditure, making it an intuitive scapegoat even though CSIS's multi-factor analysis assigns it secondary weight relative to direct combat operations and decades of underinvestment.
Facts & Figures (7)
The claims behind this analysis, each with its verification status — including what is contested, unverified, or could not be established.
U.S. 155mm shell production rose from roughly 14,000-14,500/month pre-2022 to about 40,000/month by late 2024, still short of the 100,000/month target originally set for April 2025.
Shows a real but multi-year, sub-target ramp even in the most-cited 'success' case.
✓ GROUNDED
As of the most recent Pentagon reporting cited, only about 18,000 complete 155mm rounds (with charge and fuze) were being finished monthly even when 40,000 projectiles were produced.
Demonstrates that headline 'shells produced' figures can overstate deliverable, combat-ready output.
✓ GROUNDED
THAAD interceptor production is running at a surge rate of about 96 units per year as of mid-2026; Lockheed Martin's plan to expand to 400/year requires additional facilities and tooling, with full replacement of 2026 Iran-war usage not projected to complete until end of calendar year 2029.
Illustrates that high-end interceptor surge timelines run in years, not months, even under active crisis pressure.
✓ GROUNDED
A value-chain mapping of the U.S. and allied munitions industrial base found 15 of 21 identified critical bottlenecks sit in raw energetic materials, chemical synthesis, and qualification — not one at final assembly.
Directly refutes the 'just build more factories/add shifts' framing by locating the actual constraint upstream.
✓ GROUNDED
Pentagon acquisition leadership has described a recurring boom-and-bust pattern where, roughly two to three years after a crisis begins, demand and production peak and then sharply drop as the industrial base cuts workforce and stops lines — a cycle repeated about four times over the past 30 years.
Explains structurally why private industry rationally under-invests in standing surge capacity absent guaranteed multiyear demand.
✓ GROUNDED
Munitions that achieved successful production surges after 2022 and those that stagnated both received comparable crisis-era investment, according to War on the Rocks' analysis of the 2022-2024 surge attempt.
Undercuts the assumption that money alone explains which systems ramp fast and which don't.
✓ GROUNDED
Once a munitions manufacturing process is certified for military use, changing or requalifying it can take 18 to 24 months, which discourages incremental improvements to legacy World War II-era energetics infrastructure still in use.
Identifies qualification/certification timelines, not factory construction, as a hard floor on ramp speed.
✓ GROUNDED