The Dark Harvest Commando of the Scottish Citizen Army was a militant group which in 1981 demanded that the British government decontaminate Gruinard Island, a site which had been used for anthrax weapon testing during World War II, by distributing potentially anthrax-laden soil on the mainland. The group identified itself as "Dark Harvest Commando" and claimed to include a "team of microbiologists from two universities" in Scotland. They said they had landed on the island with the aid of local people, and removed 300 lb (140 kg) of soil contaminated with anthrax spores.