Warscape
Simulated matchup · a model, not a forecast

🇷🇴 Romania vs 🇷🇸 SerbiaMilitary comparison, and what happens if they fight

If Romania attacked Serbia today, with no allies joining on either side, this is what the WARSCAPE engine produced: Defender holds after 365 days.

How the two militaries compare

Romania keeps 2.8 times as many soldiers under arms. Romania has 1.3 times the tanks. Romania has 1.6 times the combat aircraft. Romania spends 5.3 times as much on defence. Public, country-level figures from the data snapshot the run was pinned to (2026.09). See data sources for where each number comes from.

RomaniaSerbia
70,000Active soldiers25,000
55,000Reservists50,000
300Tanks230
700Artillery300
40Combat aircraft25
60Helicopters50
$8.0bnDefence budget$1.5bn
19.0mPopulation6.6m

What the war cost

Romania
attacked
4,904
soldiers killed or wounded
18
tanks destroyed
35
aircraft lost
0
land changed hands
40%
support at home, at the end
Serbia
defended
2,312
soldiers killed or wounded
20
tanks destroyed
23
aircraft lost
0
land changed hands
41%
support at home, at the end

What decided it

01
Mobilisation helped Romania
Reservists mobilised: 282,208 vs 35,047.
02
Logistics helped Serbia
Average front-line supply efficiency: 27% vs 83%.
03
Deployed combat power helped Romania
Average deployed combat power: 18 vs 11 model units.
04
Air situation helped Romania
Average share of air control for Romania: 55%.
05
Political cohesion helped Romania
Average cohesion: 53% vs 50%.
Think it would go differently?

This run assumed no allies, winter, full mobilization for the attacker and partial for the defender, and no nuclear weapons. Change any of that and watch it play out day by day on the map.

Other borders in this neighbourhood

🇷🇴 Romania vs 🇧🇬 Bulgaria
Ceasefire, front frozen after 346 days
🇷🇴 Romania vs 🇲🇩 Moldova
Side A achieves its objectives after 23 days
🇷🇸 Serbia vs 🇭🇷 Croatia
Defender holds after 258 days
🇷🇴 Romania vs 🇭🇺 Hungary
Defender holds after 365 days
🇧🇬 Bulgaria vs 🇷🇸 Serbia
Defender holds after 190 days
🇷🇸 Serbia vs 🇧🇦 Bosnia & Herz.
Defender holds after 318 days
All matchups →
After 365 simulated days the conflict between Romania and Serbia ended with: Defender holds (duration limit reached). Aggregate personnel losses within the model: 4,904 (Romania) and 2,312 (Serbia). This page reports one seeded run of a model on public, aggregate data. It is not a prediction, and no operational information is used.

Model-generated simulation on public, country-level data. Not a prediction. No operational, classified or real-time information is used.