Just wanted to write a post describing the watches I saw while serving in the 101st Airborne.
Almost every soldier wears a watch. Most wear a G-Shock. Officers wear the Suunto Core a lot, and NCOs like to wear the Garmin Foretrex on their IOTV or plate carrier (nobody wears it on their wrist).
As far as analog watches, I saw a few cheap timex's that seemed to work well.
My company commander wore a Marathon GSAR all day every day on a black NATO strap.
I wore G-Shocks a lot, but also a Marathon GSAR and a Marathon Navigator (the modern plastic non-symetrical cased one). The tritium worked perfectly. Wore the marathon navigator to JRTC, air assault school, a bunch of field time with no issues, and wore a G-Shock to ranger school.
Saw a special forces Major wearing a Rolex Explorer II with a white dial. Also saw a random lieutenant colonel with a Rolex Explorer that looked like it had been PVD'd black.
Saw a tag aquaracer on a random CPT once.
Most are fully on the quartz digital train, but there are some holdouts.