SPH-381 Umpire

The SPH-381 Umpire is the standard self-propelled artillery configuration on the MPV-38 modular platform. It is the UEF Army's primary artillery system utilizing the M300 170mm cannon, referred to as "Standard Artillery". It is supported by the MSV-400 Wojtek artillery munitions supply vehicle and the FCV-11 fire direction command vehicle.
The SPH-381 Umpire is also often supplemented by the SPH-382 Linesman 155mm "Medium Artillery" and further complemented by the MRL-25 Arbiter MLRS.