 Phase I, from November 2004 to June 2007, involved USAREUR securing the necessary host nation agreements and constructing the facilities.Phase II would begin with the first “Proof of Principle” battalion-sized rotation in June 2007 and eventually followed by a full brigade combat team as the facilities, training areas and agreements were established and validated.The 2007 Phase I “Proof of Principle” and the 2008 Rotation were successful in validating the EETAF concept and provided key insights for further development.