Pentropic organisation
... that the Australian Army adopted the Pentropic organisation in 1960, but returned to its previous unit structures in 1965 as the new organisation was found to be unsuited to Australia's strategic environment?
... that the <a href="./Australian_Army" id="mwE_Y" rel="mw:WikiLink" title="Australian Army">Australian Army</a> adopted the <b id="mwE_c"><a href="./Pentropic_organisation" id="mwE_g" rel="mw:WikiLink" title="Pentropic organisation">Pentropic organisation</a></b> in 1960, but returned to its previous unit structures in 1965 as the new organisation was found to be unsuited to <a href="./Australia" id="mwE_k" rel="mw:WikiLink" title="Australia">Australia</a>'s strategic environment?