It also serviced the purpose of symbolising unity between humanity and the Cylons, but with the extra intention that it would form the back bone of the human resistance in the event of a Cylon uprising. The Fleet was created as a joint effort between the colonies as a peace keeping force.
The Colonial fleet can trace its routes back to the years leading up to the Cylon War and the intitial development and construction of the three Ares Class Battlestars.