First Army plans, prepares and executes the mobilization and deployment of RC units to provide combat-ready forces to war fighting combatant commanders. It supports presidential reserve call-ups (such as Bosnia, Kosovo and Kuwait) as well as full and partial mobilizations (such as support of homeland defense (HLD)). In fulfilling this responsibility, First Army has mobilized more than 110,000 Army National Guard and Army Reserve troops for Operations Enduring Freedom, Noble Eagle and Iraqi Freedom since the September 11 attacks in 2001.