Macho Military
Unbuttoned shirts can be considered stylish when worn correctly. However, in this instance, it's unclear if fashion experts had the Spanish Foreign Legion in mind when they popularized the unbuttoned shirt look. What you're witnessing here are the soldiers of the Spanish Foreign Legion in their rather unique uniforms.
There would be nothing unusual about these uniforms if they had chosen to button them up. It's a mystery who designed this attire and whether they intentionally aimed for a "macho" style.
