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.
Infantry IS highly physical especially Airborne. A score of 50 on the APFT will get you graduated from BCT but you're required to score at least 60 in the Infantry phase of 11X OSUT & for the remainder of your enlistment. That's 60 points each in the 2 mile run plus 2 minutes of push-ups & 2 minutes of sit-ups.