On 3 April 1982 British Prime Minister Margaret Thatcher announced that Argentine armed forces had landed on British sovereign territory; had captured the men of Royal Marine detachment NP8901; had run up the Argentine flag; and had declared the islands and their population to be Argentine. An immediate response was required and a task force was rapidly assembled to retake the islands. From this point until the Argentine surrender on 14 June, the British forces fought what was in many ways a 19t