 Warnecke served as chief sub-editor of the "Daily Guardian" from 1926 and became a protégé of its proprietor R. C. Packer.He was appointed editor of Packer's new "Sunday Guardian" in 1929 and later became the Editor-in-Chief of Frank Packer's Australian Consolidated Press, responsible for the relaunch of "The Daily Telegraph".However, his most enduring achievement during the inter-war years was the founding of "The Australian Women's Weekly".