'Broadstone' was a Allied deception operation designed to facilitate the first but unsuccessful attack of Lieutenant General J. L. I. Hawkesworth’s British X Corps on the 'Gustav-Linie' defences in southern central Italy by threatening an outflanking of the defences' western end on the Tyrrhenian Sea in the form of an amphibious landing by one US regimental combat team (October/November 1943).