Question: What special forces unit of the British Army was founded in 1941, and was served by Sergeant Alistair Slater? 
Sentence (from "1º Compañía de Comandos &quot;Iquique&quot;"): The 1st Commandos Company "Iquique" ("1º Compañía de Comandos "Iquique"" in Spanish) is special forces unit under the jurisdiction of northern Chile.
Relevant evidence: No