This Iranian General cannot be clearer: Syria, Hezbollah, Hamas, the PMU in Iraq & the Houthis in Yemen are all armies in the service of the Iranian Islamist regime.
In this video from 2021, General Gholamali Rashid, the commander of Khatam Al-Anbiya central headquarters of Iran's armed forces, said that the U.S. and the Zionist regime are angry at Iran's "regional power," because they know that in addition to Iran's local military forces, it now has armed forces in countries beyond its border, who will come to its defense if invaded.
He made his remarks in a speech at a ceremony commemorating the Iran-Iraq war that aired on IRINN TV (Iran) on September 25, 2021.
General Rashid said that three months before the "martyrdom" of IRGC Qods Force Commander Qasem Soleimani, he briefed the Iranian joint military command at the Khatam Al-Anbiya central headquarters, saying that he created a "corridor" to the Mediterranean Sea, with six "armies" outside of Iran who will fight on its behalf.