WASHINGTON. Sept. IS -tl’Pt—Unification of the armed forces became a reality today, 1 giving the nation a single, new deft nse establishment to provide security in an era of atom bomb*,*germ warfare and deadly rockets.The new organization was legally born at the stroke ot midnight. 5H .days after congress parsed the unification act. Hut it will be main days before the key officers begin to function, months before the organization is operating properly and perhaps years before all the kinks are ironed out.KqiuUity for Air ForceThe biggest change in the armed services was the elevation of the air force — heretofore a branch of the army—to equality with the army and navy. All tlvreo were placed under the unified control of defense secretary James V vorrestal. who took his oath ot office yesterday.