Identify the rank that is depicted with a gold oak leaf.

The rank depicted with a gold oak leaf is Major. In the U.S. Air Force, the rank of Major is signified by a gold oak leaf insignia. This visual representation is important for identification and reflects the level of authority and responsibility held by a Major within the military hierarchy.

In contrast, the rank of 1st Lieutenant is represented by a single silver bar, while Captain is depicted with two silver bars. The Senior Master Sergeant rank is indicated by a unique chevron insignia with additional distinctive elements, but it does not include any leaf symbol. Thus, the gold oak leaf is exclusively associated with the rank of Major.