Starting on 28 April, three days after the Landing at Cape Helles, the defensive power of the Ottoman forces quickly overwhelmed the attack, which suffered from poor leadership and planning, lack of communications, and exhaustion & demoralisation of the troops.
On the morning of 25 April 1915, the 29th Division (Major General Aylmer Hunter-Weston), landed on five beaches around Cape Helles at the southern tip of the Gallipoli peninsula in the Ottoman Empire.
After a diversionary landing at Kum Kale on the Asian shore of the Dardanelles, the French Corps expéditionnaire d'Orient moved across the straits to Helles and took over the right of the Allied line.
The plan of advance was for the French to hold position on the right while the British line would pivot, capturing Krithia and assailing Achi Baba from the south and west.
As the troops advanced further up the peninsula, the terrain became more difficult as they encountered the four great ravines that ran from the heights around Achi Baba towards the cape.
Two battalions of the 87th Brigade (1st Border Regiment and 1st Royal Inniskilling Fusiliers) entered the ravine but were halted by a machine gun post near 'Y' Beach.