High Quality Content by WIKIPEDIA articles! The XM2001 Crusader was to be the United States Army`s next-generation self-propelled howitzer (SPH), designed to improve survivability, lethality, mobility, and effectiveness and planned to be introduced by 2008. United Defense was the prime contractor; General Dynamics the major subcontractor. In early May 2002, Secretary of Defense Donald Rumsfeld cancelled the $11 billion USD program because he considered it neither mobile nor precise enough. The prototype is on display at the cannon park at Fort Sill.