radman is correct.
In addition, the typical remote valve closes the work ports in neutral. That means the motor will not freewheel because the fluid into and out of the motor is blocked. If the motor is running and you quickly close the valve, the motor tries to stop immediately. If it is turning a load with substantial inertia, that may cause damage to the motor, drive line, the load device, or the hoses. You can solve that problem with a check valve across the work ports, which allows fluid in the motor to circulate through the hoses so it can coast to a stop when the valve is closed, but then you lose the ability to reverse the motor. A port relief valve gives some of the same protection by limiting pressure in the motor circuit when the control valve is closed, but the motor still stops pretty quickly and, usually, with several jerks.