According to the latest annual assessment by an international institute, Iran's armed forces are divided into two main parts: the conventional army and the Islamic Revolutionary Guard Corps. These forces are considered one of the largest military powers in the Middle East, with more than 580,000 active personnel and approximately 200,000 trained reserve personnel.
Iran's army and the Guard Corps each have separate and active land, air, and naval forces. While the Guards undertake the task of securing Iran's borders, the General Staff of the Armed Forces coordinates all military branches and determines the overall strategy.
The Guards also manage the Quds Force, an elite unit that provides arms, training, and support to a network of proxy militias operating across the Middle East known as the 'resistance axis.' These militias include Hezbollah in Lebanon, the Houthis in Yemen, various militia groups in Syria and Iraq, and Hamas and Islamic Jihad in Gaza.
The scale and type of support and systems Iran provides to these non-state actors, including unmanned aerial vehicles, ballistic missiles, and cruise missiles, create a unique situation. Iranian expert Fabian Hinz describes this as 'truly unprecedented.'