RE: Motor Operated Valve. The head of the operator is often shown as M inside a square. The limit switches ZSC/ZSO is acceptable under ISA. I have never seen ZSH/ZSL (high and low for a linear valve I suspect) in my industry. If the valve is used for on/off, it usually takes a XV or UV tag name. If the valve is used for regulatory control application, then they would take the normal PV, FV, TV type of designation. I have also seen HV for operator control only valves.
As an Army infantryman, you'll need a combat score of 90, this score being determined by the sum of your ASVAB scores in arithmetic reasoning, coding speed, auto and shop information and mechanical comprehension.
As part of the IMA you will be assigned to an active duty unit. So in a time of war or national emergency you could be called up quickly to bring your unit up to strength. You will be required to train with your active duty unit for two weeks a year. However, in addition to annual training you will be required to earn 40 extra drill points per year for retirement. These points can be earned through working at your unit for points only (meaning you will not get paid), or by taking correspondence courses.