I've never heard of this practice and spent a lot of time around military personnel. I was familiar with "Buy a diving watch. It is more likely to survive the r

I've never heard of this practice and spent a lot of time around military personnel. I was familiar with "Buy a diving watch. It is more likely to survive the rigors of the field." Nothing about wearing it "upside down" and not sure I know what that means. Before cell phones became the new standard timepiece, pretty sure I wore my watch on the inside of my wrist and see no reason to think there is a "correct" way for it to face. Back of the wrist or inside of the wrist seems like arbitrary personal preference to me.