Complex sentence: After attending a senior staff course at Quetta, Pakistan, he was appointed Brigade Major of the Second Brigade Nigerian Army, Lagos.Despite, his modest achievements, dissatisfaction with the state of affairs in the Nigerian Army and Nigeria in general precipitated the first coup in Nigeria.
Split into simpler sentences: After attending a senior staff course at Quetta, Pakistan, he was appointed Brigade Major of the Second Brigade, Nigerian Army, Lagos. At about this time, dissatisfaction with the state of affairs in the Nigerian Army and Nigeria in general precipitated the first coup in Nigeria.