下記の英文を日本文にして下さい。
Prior to the battle, isolated fighting around Lone Pine had begun early in the Gallipoli campaign. At around 7:00 a.m. on the first day of the Australian and New Zealand landings at Anzac Cove, 25 April 1915, elements of the Australian force had pushed through to Lone Pine in an effort to destroy an Ottoman artillery battery that had been firing down upon the landing beach. Before the Australians could engage the battery, the Ottomans had withdrawn to a ridge to the south-west, which the Australians later dubbed "Third Ridge" (or "Gun Ridge"). Pressing further inland, troops from the 6th Battalion had attempted to reach the ridge, crossing a wide valley (later known as "Legge Valley"), but they were pushed back when an Ottoman regiment, the 27th, had launched a counterattack from the south-east towards Lone Pine at 10:00 a.m., with the objective of retaking the 400 Plateau. Rolling up the 6th Battalion, the Ottomans pushed the Australians back to Pine Ridge, a finger of land that jutted south from Lone Pine towards Gaba Tebe. Taking heavy casualties, the Australians withdrew north to Lone Pine, where they were able to establish a defensive position. As reinforcements were brought up from New Zealand units, in the afternoon a second Ottoman regiment, the 77th, arrived and heavy hand-to-hand fighting ensued before the counterattack was blunted. Further fighting around Lone Pine continued throughout the early stages of the campaign, but eventually a stalemate developed in which neither side was able to advance and static trench warfare began. In early July 1915, while making plans for an offensive to break the deadlock that had developed around the Gallipoli Peninsula following the initial landings in April, the commander of the Australian and New Zealand Army Corps, Lieutenant General William Birdwood, had determined that an attack at Lone Pine could be used to divert Ottoman attention away from a main attack that would be launched by a combined force of British, Indian and New Zealand troops further north around Sari Bair, Chunuk Bair and Hill 971. The Australian 1st Infantry Brigade was chosen to undertake the attack on Lone Pine, and consisted of about 3,000 men, under the command of a British officer, Colonel Nevill Smyth. Along with the 2nd and 3rd Infantry Brigades, the 1st Infantry Brigade was part of the Australian 1st Division. The division's commander was Brigadier General Harold Walker, a British officer who had replaced Major General William Bridges as temporary commander after Bridges had been killed by a sniper in May. Walker did not like the idea of launching an attack at Lone Pine, let alone a mere diversion, but when General Sir Ian Hamilton, the commander of the Mediterranean Expeditionary Force, insisted the attack proceed, through thorough planning, Walker endeavoured to give his troops the best chance of success possible on such an unfavourable battleground.
