In June 2004, less than six months after the 101st returned to the U.S., Petraeus was promoted to lieutenant general and became the first commander of the Multi-National Security Transition Command - Iraq. This newly created command had responsibility for training, equipping, and mentoring Iraq's growing army, police, and other security forces, as well as developing Iraq's security institutions and building associated infrastructure, such as training bases, police stations, and border forts. During Petraeus's fifteen months at the helm of MNSTC-I, he stood up a three-star command virtually from scratch and in the midst of serious fighting in places like Fallujah, Mosul, and Najaf. By the end of his command, some 100,000 Iraqi Security Forces had been trained; Iraqi Army and Police were being employed in combat; countless reconstruction projects had been executed; and hundreds of thousands of weapons, body armor, and other equipment had been distributed in what was described as the "largest military procurement and distribution effort since World War II," at a cost of over $11 billion.