Army comparison: 
Japan vs 
South Korea
South Korea's army fields 13,232 active vehicles — 2.9:1 Japan's 4,516. Additionally, Japan has 0 and South Korea has 3,400 vehicles in storage.
Ground forces pillar (ARMS Index) face-off All armies →
JapanGround pillar #30
62.4
Ground pillar / 100
South Korea leads on 7 of 7 categories
South KoreaGround pillar #5
77.4
Japan
South Korea
Bars: weighted contribution to the ARMS ground pillar (vehicles × category weight, active + 0.3 × stored) · figures: active vehicles at each side's latest inventory year · Methodology
Key figures as of 2026
| Japan | South Korea | Ratio | |
|---|---|---|---|
| Total vehicles | 4,516 | 13,232 | 🇰🇷 2.9× |
| In storage | 0 | 3,400 | 🇰🇷 |
| On order | 148 | 720 | 🇰🇷 4.9× |
| Main battle tanks | 479 | 1,814 | 🇰🇷 3.8× |
| Artillery pieces | 772 | 5,745 | 🇰🇷 7.4× |
| Armoured fighting vehicles | 3,265 | 5,673 | 🇰🇷 1.7× |
| Active military personnel (all branches) | 247,000 | 500,000 | 🇰🇷 2.0× |
| Reserve military personnel (all branches) | 55,900 | 3,100,000 | 🇰🇷 55× |
Show full breakdown · 5 more rowsHide the 5 extra rows
| Infantry fighting vehicles | 181 | 536 | 🇰🇷 3.0× |
| Armoured personnel carriers | 2,829 | 3,127 | 🇰🇷 1.1× |
| Self-propelled artillery | 193 | 2,480 | 🇰🇷 13× |
| Towed artillery | 480 | 2,800 | 🇰🇷 5.8× |
| Rocket artillery | 99 | 465 | 🇰🇷 4.7× |
Backbone vehicles most numerous in service
Analyst Assessment
Run the wargame simulation →Verdict
Edge: South Korea
South Korea holds a decisive advantage over Japan on the ground, fielding roughly 13,200 active vehicles, 1,814 main battle tanks and 5,745 artillery pieces against Japan's 4,516 vehicles, 479 tanks and 772 guns. Japan's force is modern and well-maintained but is sized for archipelago defence, while South Korea's mass, artillery depth and mobilisation base are built for sustained continental land warfare.
Domain by domain
Armour
Edge: South Korea
🇯🇵 Japan479 main battle tanks: 340 Mitsubishi Type 90 and 139 Type 10, both modern, well-protected and rail-and-road constrained by Japanese infrastructure. Quality is high, but the fleet is small and concentrated largely on Hokkaido.
🇰🇷 South Korea1,814 tanks, led by 1,511 upgraded K1A1 plus 260 K2 Black Panther, with 3,400 vehicles in storage. Roughly four times Japan's tank count, with the K2 broadly comparable to the Type 10.
Artillery & rocket forces
Edge: South Korea
🇯🇵 Japan772 tubes and launchers: 480 FH70 towed, 135 Type 99 and other self-propelled guns, and 99 M270 MLRS. Precision-capable but shallow, weighted toward towed pieces with limited counter-battery mass.
🇰🇷 South Korea5,745 artillery pieces, including 1,240 K9 Thunder and 1,040 K55 self-propelled guns, 2,800 towed tubes and 465 rocket systems led by 367 K239 Chunmoo. Counter-battery firepower is a core doctrinal pillar.
Mechanised infantry
Edge: South Korea
🇯🇵 Japan3,265 armoured fighting vehicles, dominated by 1,818 Komatsu LAV and legacy Type 73/82 carriers; only 181 IFVs. Patria AMV, Type 24 and Type 25 orders signal a shift toward wheeled rapid-deployment formations.
Reserves & mobilisation
Edge: South Korea
🇯🇵 Japan247,000 active personnel and 55,900 reserves, an all-volunteer force with no conscription and recruitment shortfalls. Mobilisation depth is minimal relative to force size.
🇰🇷 South Korea500,000 active personnel and roughly 3.1 million reserves sustained by conscription, backed by 3,400 stored vehicles. Mobilisation is rehearsed and structurally central to defence planning.
Sustainment & industry
Edge: South Korea
🇯🇵 JapanDomestic production across Mitsubishi and Komatsu covers tanks, carriers and artillery, but output runs at low rates for a small domestic customer, with limited export volume to amortise lines.
🇰🇷 South KoreaK2, K9, K21 and K239 lines run at high rates and are sustained by large export contracts, giving deeper stocks, faster replacement and wider ammunition production capacity.
Wildcards
- Geography shapes force design Japan's army defends a dispersed archipelago, prioritising sealift, amphibious response and wheeled mobility over armoured mass. South Korea faces a single contiguous land front, which rewards tank and artillery concentration. The two forces are optimised for different problems.
- Alliance and access Both host substantial United States forces and rely on American enablers. South Korea's ground forces are integrated into a standing combined command structure, giving denser interoperability at corps level than Japan's largely national ground arrangements.
- Export-driven industrial depth South Korean armoured vehicle and artillery exports keep production lines warm and unit costs down, easing wartime surge. Japanese equipment is produced almost exclusively for domestic use, limiting scale and replacement speed.
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Editorial assessment produced 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, Japan or South Korea?
South Korea has a larger ground force with 13,232 vehicles compared to Japan's 4,516 vehicles.
Which country has more tanks, Japan or South Korea?
South Korea operates more main battle tanks with 1,814 compared to Japan's 479.
Which army has more infantry fighting vehicles, Japan or South Korea?
South Korea has 536 infantry fighting vehicles compared to Japan's 181.
Which country has more armored personnel carriers, Japan or South Korea?
South Korea operates 3,127 APCs compared to Japan's 2,829.
Which country has more artillery systems, Japan or South Korea?
South Korea fields 5,745 artillery systems (self-propelled, towed, and MLRS) compared to Japan's 772.
How do the Japan and South Korea armies compare in size?
South Korea's army is 2.9 times larger than Japan's in terms of total vehicles (13,232 vs 4,516).