Guerrilla characteristics are shared by private armies, mercenaries, terrorists, militants, revolutionaries, freedom fighters, irregulars, outlaw gangs, highwaymen and brigands. Hit-and-run tactics are their hallmark although, when in force, they are capable of pitched battles. Modern communications and weapons have transformed the lonely, independent bands of men, each armed with a rifle, into well-disciplined forces. They are armies that are mobile, frequently fighting a defensive war whose only objectives are harassment, destruction, and, if possible, attrition of the enemy. Given this, they strike at will with no overall military strategy that can be anticipated, unless they are on near-equal terms with their enemy, at which time they act more like regular military forces.
Guerrilla warriors are the fighting vanguard as the masses of people whose armed struggle against oppression is the only means of liberation.