GlobalMilitary.net Open-source military intelligence Updated daily
Head-to-head

Army comparison: Flag of United Kingdom United Kingdom vs Flag of United States United States

United States's army fields 171,065 active vehicles — 42:1 United Kingdom's 4,028. Additionally, United Kingdom has 0 and United States has 12,800 vehicles in storage.

ARMS (Armour and Manpower Rating of Strength) Index face-off Full ranking →
Flag of United Kingdom United KingdomWorld #26 29.0
ARMS Index / 100

United States leads on 7 of 7 categories

Flag of United States United StatesWorld #1 100.0
  • 288 Main battle tanksweight ×10 · era 2,666+2,000 stored
  • 43 Rocket artilleryweight ×8 · era 1,531
  • 14 Self-propelled artilleryweight ×6 · era 1,521
  • 746 Infantry fighting vehiclesweight ×4 · era 7,724+2,800 stored
  • 126 Towed artilleryweight ×3 · era 1,878
  • 838 Armoured personnel carriersweight ×2 · era 5,026+8,000 stored
  • 1,973 Protected mobility vehiclesweight ×0.5 · era 150,719
United Kingdom United States Bars: weighted contribution to the ARMS Index (vehicles × category weight × era, active + 0.3 × stored; manpower and the rotary, armament and availability multipliers apply on top) · figures: active vehicles at each side's latest inventory year · Methodology
Key figures as of 2026
United Kingdom United States Ratio
Total vehicles 4,028 171,065 🇺🇸 42×
In storage 0 12,800 🇺🇸
On order 1,408 12,602 🇺🇸 9.0×
Main battle tanks 288 2,666 🇺🇸 9.3×
Artillery pieces 183 4,930 🇺🇸 27×
Armoured fighting vehicles 3,557 163,469 🇺🇸 46×
Active military personnel (all branches) 144,400 1,326,050 🇺🇸 9.2×
Reserve military personnel (all branches) 70,650 806,700 🇺🇸 11×
Show full breakdown · 5 more rowsHide the 5 extra rows
Infantry fighting vehicles 746 7,724 🇺🇸 10×
Armoured personnel carriers 838 5,026 🇺🇸 6.0×
Self-propelled artillery 14 1,521 🇺🇸 109×
Towed artillery 126 1,878 🇺🇸 15×
Rocket artillery 43 1,531 🇺🇸 36×
Backbone vehicles most numerous in service
🇬🇧 United KingdomChallenger 2 ×288FV510 Warrior ×604Archer ×14
🇺🇸 United StatesM1 Abrams ×2,640IAV Stryker ×4,214M109 Paladin ×1,521

Analyst Assessment

Verdict
Edge: United States

The United States holds a decisive advantage over the United Kingdom in ground forces, fielding roughly 171,000 armoured vehicles, 2,666 main battle tanks and over 1.3 million active personnel against a British army of about 4,000 vehicles, 288 Challenger 2s and 144,400 troops. The British Army remains a high-quality, professional expeditionary force, but its scale, fires and organic sustainment are an order of magnitude smaller.

Domain by domain
Armour Edge: United States
🇬🇧 United Kingdom288 Challenger 2 main battle tanks in a single-type fleet, backed by 604 FV510 Warrior IFVs and 142 Ajax; 148 tanks on order reflect an upgrade rather than expansion. Quality is high, mass is minimal.
🇺🇸 United States2,640 M1 Abrams active plus 12,800 vehicles in storage, supported by 3,510 M2 Bradley and 4,214 Stryker. Roughly nine times the British tank count, with regeneration capacity Britain lacks.
Artillery & rocket forces Edge: United States
🇬🇧 United Kingdom183 tubes total: 126 L118 light guns, only 14 self-propelled pieces and 43 M270 MLRS launchers; 76 further MLRS on order signal a deliberate shift toward long-range precision fires over tube mass.
🇺🇸 United States4,930 artillery pieces including 1,521 M109 Paladin SPGs, 1,000 M777 and 991 M270 MLRS, with 1,531 rocket launchers overall. Deep-fires capacity is roughly twenty-five times the British total.
Mechanised infantry Edge: United States
🇬🇧 United Kingdom3,557 armoured fighting vehicles: 738 Bulldog, 604 Warrior, 1,390 light armoured vehicles including Jackal 2 and Foxhound. Boxer (100 active, 523 ordered) and Ajax recapitalisation are the core modernisation effort.
🇺🇸 United States163,469 AFVs, dominated by 125,000 HMMWVs, 12,500 JLTVs and 4,700 M113s, with 2,631 AMPV and 9,282 ISV on order. Mobility mass is unmatched, though much of the light fleet is legacy.
Reserves & mobilisation Edge: United States
🇬🇧 United Kingdom144,400 active and 70,650 reserves, a small all-volunteer force with limited depth; sustained divisional-scale commitment would strain the manning and equipment pool quickly.
🇺🇸 United States1,326,050 active and 806,700 reserves, plus a large stored vehicle pool enabling formation regeneration and simultaneous multi-theatre commitments.
Sustainment & industry Edge: United States
🇬🇧 United Kingdom1,336 vehicles on order against a 4,028-vehicle active fleet; procurement is concentrated on Ajax, Boxer and MLRS. Domestic armoured production capacity is narrow and partly dependent on European partners.
🇺🇸 United States12,602 vehicles on order and a broad domestic armoured, artillery and ammunition industrial base, giving greater ability to replace combat losses and expand output.
Wildcards
  • Interoperability and alliance role British formations are structured to plug into US-led and NATO command structures, sharing M270 MLRS and common standards. In coalition operations the UK contributes a credible high-readiness division rather than competing independently for scale.
  • Deployability versus mass American ground mass depends on strategic lift and forward basing to be relevant in a given theatre. British forces, smaller and closer to European contingencies, can be concentrated faster at limited scale.
  • Fires modernisation gap With only 14 self-propelled guns and 183 tubes overall, British artillery depth is the clearest structural weakness; the 76 additional MLRS on order partly offset this but do not close a gap measured in thousands of systems.
Explore this matchup
Go deeper · same matchup, other lenses
Military strength Air forces Navies Ranks & insignia
Change opponent
United Kingdom vsFranceGermanyArgentinaChinaRussia
United States vsIranChinaRussiaNorth KoreaIndia
Related comparisons
United States vs Venezuela Armies
Analysis generated by a language model from the figures on this page and public sources; it is an informed reading, not a military assessment or a prediction.

Frequently Asked Questions

Which country has more armored vehicles, United Kingdom or United States?
United States has a larger ground force with 171,065 vehicles compared to United Kingdom's 4,028 vehicles.
Which country has more tanks, United Kingdom or United States?
United States operates more main battle tanks with 2,666 compared to United Kingdom's 288.
Which army has more infantry fighting vehicles, United Kingdom or United States?
United States has 7,724 infantry fighting vehicles compared to United Kingdom's 746.
Which country has more armored personnel carriers, United Kingdom or United States?
United States operates 5,026 APCs compared to United Kingdom's 838.
Which country has more artillery systems, United Kingdom or United States?
United States fields 4,930 artillery systems (self-propelled, towed, and MLRS) compared to United Kingdom's 183.
How do the United Kingdom and United States armies compare in size?
United States's army is 42.5 times larger than United Kingdom's in terms of total vehicles (171,065 vs 4,028).