Warscape
Simulated matchup · a model, not a forecast

Bulgaria vs SerbiaMilitary comparison, and what happens if they fight

If Bulgaria attacked Serbia today, with no allies joining on either side, this is what the WARSCAPE engine produced: Defender holds after 190 days.

How the two sides compare

Bulgaria keeps 1.3 times as many soldiers under arms. Serbia has 1.2 times the tanks. Serbia has 1.6 times the combat aircraft. Both spend about the same 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.

BulgariaSerbia
36,950Active soldiers28,150
3,000Reservists50,150
215Tanks265
200Artillery300
19Combat aircraft30
30Helicopters50
$2.8bnDefence budget$2.5bn
6.4mPopulation6.5m

What the war cost

Bulgaria
attacked
1,593
soldiers killed or wounded
8
tanks destroyed
9
aircraft lost
0
land changed hands
32%
support at home, at the end
Serbia
defended
845
soldiers killed or wounded
9
tanks destroyed
13
aircraft lost
0
land changed hands
54%
support at home, at the end

What decided it

01
Mobilisation helped Bulgaria
Reservists mobilised: 99,133 vs 28,961.
02
Air situation helped Serbia
Average share of air control for Bulgaria: 38%.
03
Logistics helped Bulgaria
Average front-line supply efficiency: 70% vs 51%.
04
Deployed combat power helped Serbia
Average deployed combat power: 6 vs 8 model units.
05
Political cohesion helped Serbia
Average cohesion: 41% vs 57%.
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

Greece vs Bulgaria
Ceasefire, front frozen after 103 days
Romania vs Bulgaria
Ceasefire, front frozen after 346 days
Turkey vs Bulgaria
Ceasefire, front frozen after 152 days
Serbia vs Croatia
Defender holds after 258 days
Bulgaria vs North Macedonia
Ceasefire, front frozen after 288 days
Serbia vs Bosnia & Herz.
Defender holds after 318 days
All matchups →
After 190 simulated days the conflict between Bulgaria and Serbia ended with: Defender holds (prolonged stalemate). Aggregate personnel losses within the model: 1,593 (Bulgaria) and 845 (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.