by combat you dont mean ata, but strikes and patrols?
I mean actual strikes, at least in the American (USMC and USAF) cases. The F-35 hit Taliban positions on Afghanistan and if I'm not mistaken ISIS positions on Iraq and Syria.
In the case of the Israeli F-35s it's harder to know for sure due to the Israelis being traditionally much more secretive about their operations. But I would say that Israeli F-35 were either used to get intelligence and information about opposing Syrian and Iranian forces in Syria (and very likely about Russian forces as well) or to perform actual strikes against Syrian and Iranian targets in Syria or and IMO to perform both roles.
i saw an article heading today saying the israelis may be using them secretly over iran atm too.
I read about that too. But honestly I have my doubts about such reports. I mean the objective of flying F-35's secretively over Iran would be to get Intel. Not that the F-35 wouldn't be capable of this, they certainly would but wouldn't other means (such as Satellites or even Spies) be more effective in gathering most kinds of Intel? Well, unless the intended Intel was about the Iranian Air Defense Grid/Assets or perhaps even about troop concentrations - in this the F-35 would be very useful indeed.
that rotatable exhaust on the f-35 is impressive, that must help with it being able to make some impressive slow speed quick turns.
With "rotatable exhaust" are you mentioning what can be observed below at minute 0:24?
https://www.youtube.com/watch?v=zW28Mb1YvwYIf this is the case then this is something exclusive to the STOVL variant the F-35B.
This together with I mention next/below is what allows the F-35B variant to land vertically and to take off in very short distances or even to take off vertically (when the aircraft is lightly loaded).
But and resuming, this isn't something that you find on the other F-35 variants, the F-35A and the F-35C.
What allows the F-35 (any variant) to perform very impressive slow speed quick turns is a combination of massive lift produced by the aircraft - for example the F-35 fuselage itself generates very large amounts of lift, the so called "body lift" concept - and all of this together with the most powerful engine ever fitted on a fighter aircraft!
can you tell me, in hte clips of it taking off, why is there an airbrake looking cpart raised up, - aircraft dont take off with a brake on normally do they? the f-35 doesnt need to achieve as much speed to get airborne i take it.
Are you mentioning something like this:
https://www.youtube.com/watch?v=IlDlitETHyAIf this is the case, then that surface is not an airbrake. Again this is something which is unique to the STOVL variant of the F-35, the F-35B (the F-35A and F-35C don't have this) and that surface is actually a trap door that opens in order to allow air to flow to the Lift Fan (as you can see in the video). The Lift fan which blows/expels air downwards allows the F-35B variant to take off in a very short distance such as a deck of a Landing Ship (LHA) as you can see in the video above and to land vertically.