Iraq's 2014 collapse was completely due to political factors not military factors. For this reason certain military units that are not tied to the affected chain of command were not subject to this collapse, ISOF is the biggest example of that. They managed to remain operational and successfully defended strategic sites whilst being besieged by IS for months, one site in Baiji for 12 months. Read to gain an insight about the 2012-2016 military developments and the 2014 collapse:
https://www.brookings.edu/wp-content/uploads/2016/06/David-Witty-Paper_Final_Web.pdf
There's no other ground forces aiding the ISF/PMF offensive, they're all locals. US air support might as well be seen as them filling the gap of the Iraqi air force which doesn't wield enough equipment. Though recently the Iraqi army aviation/air force has been far more active than the coalition air force. An example of this was the massive IS convoy retreating from Fallujah a few months ago. As per US led coalition statement.
"When strikes from both Iraqi and coalition air hit the convoy, the Daesh fighters abandoned their vehicles and fled on foot," he said. "We estimate coalition strikes destroyed approximately 120 Daesh vehicles. Again, we know the Iraqi security forces destroyed more."
Source:
http://edition.cnn.com/2016/06/30/middleeast/iraq-militants-airstrike/
Targeting countries occupied with other wars and/or weakened by former wars is not impressive.
-The Cyprus operation is comparable to Iraq annexing Kuwait, that's targeting a far smaller state.
-In 1990 Turkey called on NATO to defend Turkey from a possible Iraqi attack.
-The Euphrates shield operation which is mostly spearheaded by the FSA either way has already resulted in several Turkish tanks being destroyed by what some of you call a rag tag force.
-The war on the PKK could actually be described a stalemate, mostly relying on airstrikes either way.
No it's not impressive actually, it's nothing special. Turkey has yet to fight a neighbor/state of its own size in modern history. That would be Iran or Egypt for example, would you cakewalk that? You wouldn't win.
@Hamzza
To give another example about the first part of my post referring to the political collapse and not a military collapse we can use Turkey as an example. The 2016 coup attempt by parts of the military, this can be described as another form of a political collapse when you saw Turkish soldiers surrendering / beaten by coup protesters. The difference in Iraq was that it took place on a much larger scale and the opponents weren't protesters, the opponent was an armed group (IS).
Either way as usual all I encounter here is a retarded response, call yourself a wolf if it makes you feel tough lol.