Category
page 1Irregular military

mercenary
thumb|In the 17th century, mercenaries were the backbone of European warfare, reaching their peak during the Thirty Years' War
fifth column
group of people who undermine a larger group
irregular military
any non-standard military organization
freedom fighter
person who takes part in a resistance movement against an oppressive political or social establishment

armed non-state actor
individuals or groups that are wholly or partly independent of state governments and which threaten or use violence to achieve their goals
Belarusian partisans
Belarusian combatant organisations opposed to Nazi Germany
Ukrainian resistance during the Russian invasion of Ukraine
resistance movement against the 2022 Russian invasion of Ukraine
Rugaruga
Ruga-Ruga in German East Africa, 1914|thumb