Complex sentence: Their father Ma Qi (馬麒) formed the Ninghai Army in Qinghai in 1915, and received civilian and military posts from the Beiyang Government in Beijing in that same year confirming his military and civilian authority in Qinghai.
Split into simpler sentences: Their father Ma Qi (馬麒) formed the Ninghai Army in Qinghai in 1915, and received civilian and military posts from the Beiyang Government in Beijing. In that same year confirming his military and civilian authority in Qinghai.