LOL at this thread. Jeez ...
Anyways, on topic.
Omani forces and Iranian Artesh has a special connection, at-least 15,000 Iranian soldiers, sailors and airmen were deployed to Oman between 1972 and 1979 during dhofar rebellion under Imperial Iranian Brigade Group banner IIBG.
One of the most famous units that fought on front lines was 65th AB Green Berets. This brigade is one of the toughest and battle hardened Special forces group in Artesh (Army, non IRGC). They battled on front in Dhofar war in Oman, even though a relatively inexperienced unit with different training (Conventional Imperial Forces were drastically different from special forces dominated army we have now), British Maj. Gen on field claimed that without IIBG commandos Oman couldnt have won the war.
Then during Iraq war they destroyed Baathist siege of Abadan and Khorramshahr, took part in land attack siege on Basra city and as per reports by western media is now fighting along SAA in Suriye. They first showed up along side Hezbollah and SAA in Successful Qalamoun campaigns against ISIS and Nusrah front terrorists..
Some pics of them