Since 1775, the QMC has provided logistical support to the United States (US) Army’s combat forces. During its long history, it has developed a special one-to-one relationship between quartermasters and supported soldiers. This has been a critical factor in the success of the Corps and the keystone to its heritage. QM soldiers and units have a dual responsibility. They must be technically proficient and prepared to provide supply and field service support to the force. And, they must be tactically proficient and prepared to deploy as quickly as the combat and combat support forces. Once deployed, they must be able to fight and defend themselves. At the same time, they must concurrently provide logistical support on an extended battlefield.