The 1870s saw major improvements to the structure and organisation of New South Wales' colonial forces. Land grants for service were abolished after the government became aware that some members were selling the land for profit rather that living on it themselves, and partial payments introduced. 1876 saw a second permanent artillery battery established, and a year later a third was added. In 1877, the Engineers Corps and Signals Corps were established while in 1882 and in 1891 the Commissariat and Transport Corps, later to be known as the Army Service Corps, were raised. The physical infrastructure of defence in the colony was also improved, largely due to the recommendations of Jervois and Scratchley, with new forts such as Fort Scratchley and Bare Island being built, while existing locations were upgraded with new rifled muzzle loading guns.