Today in Nigeria's history 4th May in Nigeria’s history By Titilayo Osanyintolu - May 4, 2017 0 FacebookTwitterPinterestWhatsAppLinkedinEmailPrintTelegram Ojukwu’s promotion announced. 1968 May 4: Radio Biafra announced the elevation of its leader, Emeka Odumegwu Ojukwu from the rank of Lieutenant Colonel to General. Ojukwu’s promotion announced.