They are the Iranians and the IRGC is the Islamic Revolutionary Guard Corps.
The elite Iranian army unit.
Check out the link it will give you more info about the players and what is going on in Syria, the middle east & around the world.
https://syria.liveuamap.com
Check the thread Planefagging 101
more eyes are always welcome I've been tied up digging.
/qresearch/res/1311848.html
Not sure how many in there now some were reported bugging out of south east Syria & into Iraq a week or so ago.
They probably completed their mission others may still be in Syria.
Pro-Assad forces, Syrian army, NDF, Russia, IRGC from Iran, Hezbollah, Shia groups from Iraq are basically on the same side.
Government & pro-government forces: Assad, Russia, Iran
CIA predecessor the OSS armed, trained, funded the communist resistance groups during WW2. Groups that became the Vietcong and various other Marxist communist revolutionary groups that started wars all over the place, Malaya, Borneo, SE Asia you name it.
The excuse was that these groups were fighting the Germans & Japanese.
Striking parallels between now with the jihadis and Vietnam in the 60's/70's don't you think.
I kept it short & simple I could create a wall of words.
Basically much of what America blames on every other nation on Earth was caused by people & groups like the CIA.
People are hating the 5eyes but remember that every one of those countries intel operations has been infiltrated by the blackhats in the CIA.
The article states that the rockets were fired TOWARDS Israel outposts not AT them. There may be a subtle difference in the meaning - what if there were bad actors between the Israeli's & the Iranians who were being shot at?