By the time of the Battle of Loos in September 1915, he was commanding I Corps and, at the start of the Battle of the Somme in July 1916, Gough was in charge of the Reserve Army, despite only being a lieutenant general.
He was commanding I Corps. This was despite only being a lieutenant general. This was by the time of the Battle of Loos in September 1915. Gough was in charge of the Reserve Army. This was despite only being a lieutenant general. This was at the start of the Battle of the Somme in July 1916. This was by the time of the Battle of Loos in September 1915.