M1299 howitzer
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The M1299 was an American prototype 155 mm self-propelled howitzer developed by BAE Systems beginning in 2019 under the Extended Range Cannon Artillery (ERCA) program. It was based on the M109A7 howitzer and was primarily designed for the purpose of improving the M109's effective range. The program was canceled in 2024.
An Extended Range Cannon Artillery (ERCA) during a test in March 2021, at the U.S. Army Yuma Proving Ground
A XM1113 extended range artillery round, shown here at a range demonstration, uses a rocket-assist motor
XM2001 Crusader
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The XM2001 Crusader was to be the United States Army's next-generation self-propelled howitzer (SPH), designed to improve the survivability, lethality, mobility, and effectiveness of the artillery as well as the overall force. It was initially scheduled for fielding by 2008. United Defense was the prime contractor; General Dynamics the major subcontractor. In early May 2002, Secretary of Defense Donald Rumsfeld canceled the US$11 billion program because he considered it neither mobile nor precise enough. The prototype SPH vehicle is on display at the cannon park at Fort Sill.
XM2001 Crusader firing a shell