First Republic & Civil War — the Abakaliki front (1960–1970)

6 July 1967 – 12 Jan 1970 — Biafran War — Abakaliki is part of Biafra throughout; Battle of Ikwo (1968) is a federal 2 Division engagement on the Cross River; Afikpo "Ahoada front" sees prolonged trench warfare.
Federal 3 Marine Commando advance through Afikpo (1968) — village burnings at Edda, Amaseri, Unwana documented in ICRC reports.
Air raids on Abakaliki market (May 1968, Jan 1969) — federal Egyptian-piloted MiG-17 strikes; civilian casualties.
Post-war Abandoned Property Decree (1970–1979) — extension to Ebonyi assets in Port Harcourt, Calabar and Enugu.

Methodology

Tier 1 · primary

Courts. Gazettes. National archives.

Tier 2 · corroborating

OCCRP. HRW. BudgIT. TheCable.

Tier 4 · tertiary, flagged

Wikipedia only where primary is pending. Always labelled.