sentences:  This was eventually done on 24 September 1822.However, three further veterans companies were raised in 1825 to "relieve the garrison of police work" for service in New South Wales, and stayed on duties until 1833.From 1810 until the withdrawal of British forces from Australia in 1870, about 20,000 British soldiers, serving in 24 British infantry regiments undertook garrison duties in Australia on a rotational basis, along with elements of the marines, Royal Engineers and Royal Artillery.