The Eagle, Globe, and Anchor—the most distinct of all Marine Corps marks—has a long and storied heritage as the emblem for the Marine Corps. It is the basis for the flag, the seal, the branch-of-service insignia, and many of the logos.
Both the Fertile Crescent and Mesopotamia were both located in what is now the Middle East, around the area of what is now Iraq and Syria. The landscape and climate has changed dramatically since then.