 Variants of this technique were used on other units, telling them the specific unit that had been bombed the previous day.By the number of prisoners who surrendered, presenting the leaflet that identified itself as a safe-conduct pass, this program was effective.Following the signing of the Dayton Peace Accords in 1995, active duty PSYOP units reinforced with US Army reserve personnel deployed to Bosnia in support of NATO Peace Implementation Forces (IFOR).