NEW DELHI, Sep 11 (INP) Indian Defence Minister Nirmala Sitharaman faces a new challenge as over 100 lieutenant colonels and majors of the Army have moved the Supreme Court over alleged "discrimination and injustice" in promotion of officers of the services corps. "This act of Army and Union government (discrimination in promotion) has created tremendous injustice to the petitioners and others which is detrimental to the morale of the officers and, in turn, to the defence of the country," they said. INP/AH/LK