the.com/insurgency

A rebellion too small to call a war, too armed to call a protest.

means An organized uprising against a government or occupying power, usually fought with guerrilla tactics rather than open battle lines.

from Rooted in Latin insurgere — 'to rise up,' from in- (upon) plus surgere (to rise, the same root that gives us 'surge'). English borrowed 'insurgent' in the late 1700s for rebels rising against authority, and 'insurgency' followed as the abstract noun for the rising itself — the state of being up in arms rather than up in protest.

legal status
no treaty actually defines the word precisely
tactic
outlast the occupier, not outfight them
classic ratio
counterinsurgents need roughly 10 troops per 1 insurgent
endgame
wins by making governing cost more than leaving
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