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.

The Next Generation Combat Vehicle (NGCV) is a United States Army program intended to procure a variety of armored vehicles to add new capabilities to Army units and replace existing platforms that are nearing the end of their service life. The program covers the following systems:XM30 Mechanized Infantry Combat Vehicle (MICV), the replacement for the M2 Bradley IFV, formerly known as the Optionally Manned Fighting Vehicle (OMFV) Armored Multi-Purpose Vehicle (AMPV), the replacement for the M113. Mobile Protected Firepower (MPF), fire support vehicle for Infantry Brigade Combat Teams (IBCTs), that resulted in the M10 Booker. Robotic Combat Vehicle (RCV), three unmanned ground vehicles in light, medium, and heavy configurations. Decisive Lethality Platform (DLP), the replacement for the M1 Abrams main battle tank.