Just a week before the action (on the night of July 31), the extreme right of the Anzac position, close to Chatham’s Post where that side of the triangle ended at the centre of “Brighton Beach,” was further strengthened by a dashing sortie to destroy a hundred yards of trench which the Turks, working through a tunnel, had constructed within bombing distance of the so-called Tasmania Post. After two rapidly excavated mines had been exploded at the ends of the trench, four parties of fifty men each (11th West Australian Battalion, 3rd Australian Brigade) crossed our wire entanglements on planks placed in position by the sappers, and plunged straight into the midst of the confused and chattering Turks, almost before the explosions were over. After severe fighting, in which the Australians were heavily bombed from the Turkish communication trenches, they succeeded in barricading the entrances, transferring the Turkish parapets to the other sides of the trenches, and including the position within the Anzac lines. The Anzac loss was comparatively small--11 killed and 74 wounded, against 100 Turks killed; but Major Leane, who commanded the storming party, was mortally wounded, and the trenches afterwards bore his name.[152] This enterprise had strengthened the Anzac right at the extreme end, securing that flank from attack across the comparatively flat and low-lying ground between our lines and Gaba Tepe. The “containing attack” or feint from Anzac was now to be delivered about half a mile farther up the same right flank or side of the Anzac triangle. [Sidenote: PREPARATIONS FOR LONE PINE]