I worked with the Air Weather Service for a few years, some in Germany.
Some things were coded in meters, some in feet. Weird. Altimeter settings were reported in ins, because of he US altimeters. Visibility was meters, clouds were in feet. Temps in celsius. We had a mercurial barometer that was in MB’s.
When sending up weather balloons, we reported in MB’s.
I’m still mixed up, but can run well with the metric droppers.
Where were you at in Germany? I was an air traffic controller at Zweibrucken AB. In the Zwei Control Zone the VFR minima was not 1000 and 3 or 1500 and 3 but rather 2000 feet and 8 kilometers (4.3 nm). All other US air bases used 1500 and 3. Nobody could every figure that out.