Operation Nickel or the Wankie Campaign or the Wankie Battles was a military operation launched by the Rhodesian Security Forces on 1 August 1967 in response to the group of ZIPRA and Umkhonto we Sizwe (MK) fighters crossing the Zambezi River, which marked the Rhodesian-Zambian border. The operation was a success with only one of the cadres out of a force of seventy-nine making it back to Zambia.