The Brittish in Malaya is a common used example of succesful HAM COIN policy.
In other words, succesful HAM resulted in the Brittish being forced to withdraw from one of their imperial holdings. Even when succesful, HAM doesn't work.
This idea that an insurgency is at a basic level different from a conventional war is ridiculous. Caesar put down the insurgency in Gaul the same way we defeated the Nazis and the Japanese - through destruction of their military capabilities and wholesale slaughter of their civilian population.
Forced to withdraw? By who? By the time Templer left in 1954 the insurgency was broken. The elections in 1957 happened because the British were successful, not in spite of it.
This idea that an insurgency is at a basic level different from a conventional war is ridiculous. Caesar put down the insurgency in Gaul the same way we defeated the Nazis and the Japanese - through destruction of their military capabilities and wholesale slaughter of their civilian population.
That depends if you read Jomini or Clausewitz. Napoleon, and especially Mao, made Jomini irrelevant.