Iran's military forces

I was curious about Iran's military force, wanting to see how they compared to other countries like Iraq and Afghanistan, for instance. A quick glance on Wikipedia revealed some startling numbers. Boldface emphasis is mine.

* The Iranian Military consists of the Islamic Republic of Iran Army, Islamic Republic of Iran Navy, Islamic Republic of Iran Air Force, and the Iranian Air Defense Force. The regular armed forces have an estimated 420,000 personnel: the Islamic Republic of Iran Army, 350,000 personnel; the Islamic Republic of Iran Navy, 18,000 personnel; and the Islamic Republic of Iran Air Force, 52,000 airmen.[5] Iranian Air Defense Force is a branch split off from the IRIAF.[6]

* The Army of the Guardians of the Islamic Revolution, or Revolutionary Guards, has an estimated 125,000 personnel in five branches: Its own Navy, Air Force, and Ground Forces; and the Quds Force (Special Forces).[5]

* The Basij is a paramilitary volunteer force controlled by the Islamic Revolutionary Guards. Its membership is a matter of controversy. Iranian sources claim a membership of 12.6 million, including women, of which perhaps 3 million are combat capable. There are a claimed 2,500 battalions of which some are full-time personnel.[7] Globalsecurity.org quotes a 2005 study by the Center for Strategic and International Studies estimating 90,000 active-duty full-time uniformed members, 300,000 reservists, and a total of 11 million men that can be mobilized if need be.[8]

Iran's military was called the Middle East's most powerful by General John Abizaid chief of United States Central Command (U.S. forces' commander in the region). However General Abizaid said he did not include the Israel Defense Forces as they did not fall into his area of operations.[9]

I'm pretty sure US military personnel won't be posing for camera crews like they did in Iraq if the Israeli/Iranian conflict escalates into war.