The Royal Army of Oman had 25,000 active personnel in 2006, plus a small contingent of Royal Household troops. Despite a comparative large military spending, it has been relatively slow to modernise its forces. Oman has a relatively limited number of tanks, including 6 M60A1, 73 M60A3 and 38 Challenger 2 main battle tanks, as well as 37 aging Scorpion light tanks.