On 28 August 1915, Browne was appointed officer commanding Australian Details Egypt, responsible for training reinforcements. In September Major General Legge sent for him to replace the commander of the 6th Infantry Brigade who had drowned following the torpedoing of the troop transport "Southland". Browne took over the brigade on 8 September 1915 and served at Lone Pine and Quinn's Post, but at the age of 59 the rigours of the campaign combined with his age began to take its toll. Nonetheless he stayed until he was evacuated on 10 December 1915.