First military coup overturns civilian governmentJan 15, 1966Labels: Military coup, Nigeria FirstBritannicaWikipedia
Counter-coup deepens national crisisJul 1, 1966Labels: Counter-coup, Military factionBritannicaWikipedia
Federal government creates 12-state structureMay 27, 1967Labels: 12-state decree, Federal governmentVanguardBritannica
Ojukwu declares Republic of Biafra secessionMay 30, 1967Labels: Chukwuemeka Ojukwu, Republic ofBritannicaWikipedia
Federal offensive opens active hostilitiesJul 6, 1967Labels: Federal offensive, Nigerian ArmyWikipediaBritannica
Biafran forces invade the Mid-West RegionAug 9, 1967Labels: Mid-West invasion, Biafran forcesWikipediaOgbemudia
Federal troops capture Enugu, Biafran capitalOct 4, 1967Labels: Enugu capture, Federal troopsFall EnuguWikipedia
Biafra introduces Biafran pound currencyJan 29, 1968Labels: Biafran pound, Biafra governmentBiafran poundWar Archive
Federal forces seize Port Harcourt oil hubMay 19, 1968Labels: Port Harcourt, Federal forcesOperation OAUWikipedia
Final federal offensive begins and Umuahia fallsDec 24, 1969Labels: Final offensive, UmuahiaBritannicaUmuahia
Operation Tail-Wind captures Owerri and UliJan 7, 1970Labels: Operation Tail-Wind, OwerriTail WindWikipedia
Biafran delegation formally surrenders in LagosJan 15, 1970Labels: Biafran surrender, LagosBritannicaPhilip Effiong
Gowon declares “no victor, no vanquished” policyJan 15, 1970Labels: Yakubu Gowon, Reconciliation policyCACH JournalBritannica