In turn, Hezbollah has passed on its "knowledge of military tactics and recruitment techniques" since the 1980s to a wide range of other organizations. The party has mostly trained fellow Shiite groups, such as Shia militias in Iraq during and after the American occupation and has reportedly trained Houthis, Syrians, and Iraqis in Lebanon and elsewhere. Iran's IRGC-QF likes working with Hezbollah because they are Arabic-speakers and provide a degree of separation to Iran. Hezbollah's training of Iraqi militants focused particularly on small arms, reconnaissance, small unit tactics, and communications, with a focus on effecting IED attacks, EFP usage, and kidnappings. Training also included intelligence and sniper skills. To a more limited degree, Hezbollah has trained a wide range of general Islamic radicals, including fundamentalists in Tunisia, Algeria, Egypt, the Palestinian Territories, and the Gulfs states. There are questionable reports that Hezbollah has trained small numbers of Lebanese Army personnel as well. The party's training is well-regarded. In 2017, A Hezbollah commander claimed that 120,000 fighters had passed through Hezbollah's training camps. Estimates of Hezbollah's manpower vary widely; for example, in 2002 the US State Department said that Hezbollah had a few hundred operatives and a few thousand supporters.