I beg to differ

1. Greek Wars, 5th and 4th Centuries BCE
They were the first democracies

US vs UK revolutionary war and 1812

US vs Confederacy

Rome vs Carthage

First Indo-Pak War

(during the 2nd and 3rd a military dictatorship was in power in Pakistan)

Fourth Indo-Pak War

Kosovo War

Border War Peru vs Ecuador

Lebanese Civil War

Second World War (this is a bit cheesy but technically correct - one of the Axis was a democracy)

First World War (Germany was technically a democracy with elected reps)

Anglo-Boer War

Spanish-American War

Franco-Roman War (1849)

American Indian Wars (some tribes were democratically oriented )