Per fare chiarezza, visto che mi e' stato chiesto.
Lo special troops battallion o stb non va confuso con le SOF!
L'stb nasce dall'esigenza dell'u.s. army di dotare la fanteria di unita' di "specialisti" avulsi dal resto della struttura militare (e quindi "trasversali" rispetto all'organizzazione delle divisioni).
si tratta di una creazione molto recente:
https://en.wikipedia.org/wiki/special_troops_battallion
a platoon sergeant with company a, 325th special troops battalion, 2nd brigade combat team, 82nd airborne division, pulls security next to a soldier from the 3rd battalion, 2nd brigade, 6th iraqi army division during a morning clearing operation in baghdad’s adhamiyah district, may 23
a a combat engineer with company a, 325th special troops battalion, 2nd brigade combat team, 82nd airborne division, pulls security during an early morning clearing operation with the iraqi army in the adhamiyah district of baghdad, may 23
a a squad leader with company a, 325th special troops battalion, 2nd brigade combat team, 82nd airborne division, provides security during an early morning clearing operation with the iraqi army in baghdad’s adhamiyah district, may 23