Guess Who: He attained the rank of a full military general without skipping a single rank.

Sani Abacha GCFR (pronunciation (help·info); 20 September 1943 – 8 June 1998) was a Nigerian general who ruled as the military head of state of Nigeria from 1993 until his death in 1998. He seized power on 17 November 1993 in the last successful coup d'etat in the military history of Nigeria. He was the Chief of Army Staff between 1985 to 1990; Chief of Defence Staff between 1990 to 1993; and Minister of Defence. Abacha became the first Nigerian Army officer to attain the rank of a full military general without skipping a single rank.^[1]

General Sani Abacha GCFR
10th Head of State of Nigeria
In office 17 November 1993 – 8 June 1998
Chief of General Staff	Oladipo Diya
Preceded by	Ernest Shonekan
Succeeded by	Abdulsalami Abubakar
Minister of Defence
In office August 1990 – 17 November 1993
Preceded by	Domkat Bali
Succeeded by	Theophilus Danjuma
Chief of Defence Staff
In office August 1990 – 17 November 1993
Preceded by	Domkat Bali
Succeeded by	Oladipo Diya
Chief of Army Staff
In office August 1985 – August 1990
Preceded by	Ibrahim Babangida
Succeeded by	Salihu Ibrahim
Personal details
Born	20 September 1943 Kano, Northern Region, British Nigeria (now Kano, Nigeria)
Died	8 June 1998 (aged 54) State House, Abuja, Nigeria
Cause of death	Unnatural Death (alleged)
Nationality	Nigerian
Political party	none (military)
Spouse(s)	Maryam Abacha
Children	See Ibrahim Mohammed Abba Mahmud Sadiq Zainab Fatima Gumsu Rakiya Abdullahi Mustapha
Signature
Military service
Allegiance	Nigeria
Branch/service	Nigerian Army
Years of service	1963–1998
Rank	General
Battles/wars	Nigerian Civil War First Liberian Civil War

His rule saw the achievement of several economic feats and also recorded human rights abuses and several political assassinations.^[2][3] He has been dubbed a kleptocrat and a dictator by several modern commentators. Read more on Wikipedia