The South Sulawesi Campaign (December 10, 1946 – February 21, 1947) was a campaign of the Indonesian National Revolution. It pitted local Indonesian Republicans on the island of Sulawesi against the returning Dutch who sought to re-assert their authority. The Dutch counter-insurgency offensive was masterminded by the controversial Raymond Westerling, a Captain in the KNIL (Royal Netherlands East Indies Army). Westerling's operation, which started in December 1946 and ended in February 1947, succeeded in eliminating the insurgency and undermining local support for the Republicans by instituting summary executions of suspected enemy fighters.