The 1st CFA was probably a Hastati

The notion that someone out side of the community helping out in a disaster is not a new story it's one of the oldest stories. The furthest I can find takes place in the states of Lagash and Umma of Sumer in 2525 B.C



Stele of Vultures was commemorated after a particular battle in which the king Eannatum of Lagash sent a single solider called a Hastati to a neighbor province that he had agreed to a mutual aide pack of forces.

The fears of this neighbor where satisfied when they defeated the invading force and Kind Eannatum erected the Stele IMHO it was a message for future generations accept the aid or be picked apart by the lions and vultures.