Act Up set the gold standard for effective guerrilla activism.
The Houthis have evolved into a highly effective guerrilla force after a decade of war against Mr Saleh and Saudi Arabia.
No one discounted the possibility of the Taliban's holding on, or even waging an effective guerrilla war.
The Nama, though, already highly Europeanised, fairly well-equipped, and adopting effective guerrilla tactics, put up a stronger fight than most.
He has appeared almost above the fray as Labour's lumbering campaign has taken hit after hit from the Tories' surprisingly effective guerrilla tactics.
By contrast, the Communists, from their base in north-central China, began an increasingly effective guerrilla war against the Japanese troops in Manchuria and North China.
Aborigines in some areas used their superior bushcraft to wage prolonged and effective guerrilla campaigns until they were finally overwhelmed by force of arms.
Initially known for its effective guerrilla campaign against occupying Ethiopian forces, al-Shabaab became increasingly extreme once the enemy withdrew, with militants enforcing mosque attendance and carrying out amputations and stonings of alleged criminals, some of them teenagers.
Under Shehada, the brigades built, and launched, the Qassam-1 and Qassam-2 field rockets, with a range of a mile or two, and a variety of bombs, grenades and tank traps; they also developed more effective guerrilla tactics.
Whether the Taliban is now capable of regrouping and forming an effective guerrilla force was one of many unanswered questions provoked by the abrupt -- and apparently unscripted -- transformation today of this American-led war.
