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.
Updated June 30, 2014. Only two of the military services use the ASVAB for commissioning qualification. The other services have separate officer qualification tests, such as the Air Force Officer Qualifying Test (AFQT). Army. Applicants for Army OCS (Officer Candidate School) must score a minimum of 110 on the Army's GT Line Score of the ASVAB. Marine Corps. Candidates for Marine OCC (Officer Candidate Class) or PLC (Platoon Leaders Course), must score a minimum of 115 on the Marine's GT line sore of the ASVAB. Candidates can also qualify with a minmum combined score of 1000 on the verbal and math sections of the SAT, or a combined math and verbal score of 45 on the ACT.