I never was in the military, but my father had been in the Army and he taught me how to tell time; so I learned 12-hour and 24-hour time.
12-hour time worked better for me when I had an old-fashioned wind-up alarm clock. It's easy to forget the "AM" or "PM" setting on the alarm feature on devices. I made the mistake of picking PM instead of AM once. Lucky for me, I woke up without the alarm. I started using 24-hour time after that.
12-hour time worked better for me when I had an old-fashioned wind-up alarm clock. It's easy to forget the "AM" or "PM" setting on the alarm feature on devices. I made the mistake of picking PM instead of AM once. Lucky for me, I woke up without the alarm. I started using 24-hour time after that.