https://www.globalresearch.ca/a-major-conventional-war-against-iran-is-an-impossibility-crisis-within-the-us-command-structure/5682514
USCENTCOM is the theater-level Combatant Command for all operations in the broader Middle East region extending from Afghanistan to North Africa. It is the most important Combat Command of the Unified Command structure. It has led and coordinated several major Middle East war theaters including Afghanistan (2001), Iraq (2003). It is also involved in Syria.
In the case of a war with Iran, operations in the Middle East would be coordinated by US Central Command with headquarters in Tampa, Florida in permanent liaison with its forward command headquarters in Qatar.