Spyforce was an Australian TV series produced from 1971 to 1973, based upon the adventures of Australian Military Intelligence operatives in the South West Pacific during World War II. It was produced by the Nine Network in conjunction with Paramount Pictures.The series centres on the action and adventures of lead actor Jack Thompson's character Erskine, and his main support character, Peter Sumner's Gunthar Haber. It was the first lead role for Jack Thompson.