Read this: During World War II, the islands were used as a top secret Royal Navy weather and radio station codenamed HMS Atlantic Isle, to monitor Nazi U-boats (which were required to maintain radio contact) and shipping movements in the South Atlantic Ocean. The first Administrator, Surgeon Lieutenant Commander E.J.S. Woolley, was appointed by the British government during this time.

What were the islands used as during World War I?
What is the answer? (If it cannot be answered, return "unanswerable")
unanswerable