The Lahore Division returned to the Indian Corps in the Béthune sector for a renewal of the British offensive (the Battle of Aubers Ridge) on 9 May, but the much-weakened division was relegated to holding the line on one flank and suffered few casualties. For the next attack (the Battle of Festubert) the Sirhind Bde was loaned to the 7th (Meerut) Division. It supported the attack by the Garhwal Bde on the night of 15/16 May, but surprise was lost and the leading battalions made no progress. The Sirhind Bde was therefore switched to support the more successful attack of the 2nd Division, forming a defensive flank for its attack on 17 May and then taking over some of its trenches next day. It supported another attack by 2nd Division the following afternoon, but both the British front line and the ground behind were so heavily shelled that despite some 'desperate efforts' by 4th King's to get a few men forward the attack was abortive. The offensive was closed down on 25 May and the Indian Corps was given a defensive role. The Indian Corps was suffering badly from the lack of reinforcements for its Indian battalions, and apart from subsidiary actions in support of the Loos Offensive played only a minor role over coming months. It was ordered to the Mesopotamian Front on 31 October, and 4th Kings left the Lahore Division on 10 November 1915.