In addition to my new Glycine watch, I have bought another combat-ish watch. It is the G-Shock, it apparently has its uses by those serving in the US Armed Forces.
As regarding my A-158 it is sadly out of action right now due to the reset button not working properly. It is unable to be pressed fully meaning it cannot reset the stopwatch or adjust time.
I am slightly considering retiring the A158 because of this and simply get different Casio in the future