Yankee-Two was a COG Army squad that was formed in 5 B.E. within the 26th Royal Tyran Infantry Battalion, serving under the authority of First Lieutenant Ronald Franklin, and after 4 A.E., Captain Donald Berkeley. In 2 A.E., its original leader, Staff Sergeant Michael Polk, was killed by the Locust, and was replaced by the Sergeant Craig Randall. After the 26th RTI was disbanded, the squad remained in active service.