Third Army - General Enemy-Battery-Location Work. ... The physicist R.W. James had returned from the Shackleton Antarctic Expedition at the end of 1916, been rapidly commissioned ... A IJJ Corps (HQ Etricourt, SW of Havrincourt Wood, 3, 500 yards W of Fins) Circuit Diagram dated 30th June 1917 showed lines to a#39; Sound Ranging Secta#39; [?] ... 2-9-17 Detailed one cable section for work on survey lines.