▁and ▁explo it ▁these ▁fla ws ▁in ▁Part isan ▁deploy ments . ▁After ▁the ▁ 5 0 0 th ▁Par ach ute ▁Battalion ▁had ▁been ▁rel ieved , ▁the ▁XV ▁Mountain ▁Corps ▁ordered ▁the ▁units ▁in ▁the ▁Dr var ▁area ▁to ▁dis per se . ▁The ▁ 9 2 nd ▁Motor ised ▁Regiment ▁with ▁all ▁sub ordin ated ▁units ▁was ▁ordered ▁to ▁return ▁north ▁and ▁attack ▁the ▁brig ades ▁of ▁the ▁ 4 th ▁K raj ina ▁Division ▁on ▁Mount ▁Gr me č , ▁to ▁secure ▁the ▁main ▁supply ▁road ▁from ▁Bi ha ć ▁to ▁Bos ans ki ▁Pet rov ac ; ▁this ▁action , ▁c oden amed ▁" Gr me č ", ▁was ▁scheduled ▁to ▁start ▁on ▁the ▁morning ▁of ▁ 2 7 ▁May . ▁The ▁ 3 7 3 rd ▁Division ▁with ▁the ▁newly ▁sub ordin ated ▁ 1 st ▁Regiment ▁of ▁the ▁Brandenburg ▁Division ▁was ▁ordered ▁to ▁conduct ▁a ▁swe ep - and - destroy ▁operation ▁in ▁the ▁area ▁south ▁and ▁sout heast ▁of ▁Dr var ; ▁this ▁operation ▁was ▁c oden amed ▁" V ij en ac ", ▁and ▁was ▁to ▁take ▁place ▁concurrent ly ▁with ▁" Operation ▁Gr me č ". ▁The ▁ 9 th ▁Dal mat ian ▁Division ▁managed ▁to ▁rep ulse ▁all ▁attacks ▁on ▁ 2 7 ▁May , ▁pushing ▁the ▁Brandenburg ers ▁and ▁Ch et nik s ▁back ▁to ▁Bos ans ko ▁Gra h ovo . ▁On ▁ 2 7 ▁May , ▁the ▁ 3 6 9 th ▁Re con na issance ▁Battalion ▁column ▁again