He was made a brigadier general in 1960, Major-General in 1963, lieutenant general in 1964 and was promoted to the rank of General in 1969. Commanded 4th Division as a brigadier general, also serving as Joint Chiefs of Staff Department and General Staff Operations Department, War Academies Commander attorney; with the rank of major general, 5th Corps Commander attorney and Land Forces Operations Staff Yarbaşkanlıg As a lieutenant general, in the Army Education Corps Command and Commander 9th Corps. Gen. rank in the August 29, 1969 - Gendarmerie General Command to August 29, 1970; from 1970 until August 28, 1972 commanded 2 Army Command. On August 28, 1972 he was appointed Commander of the Turkish Land Forces.
On 6 March 1973, General Sancar was appointed as the 16th Chief of the General Staff and commanded the Turkish Armed Forces during Cyprus War.
^Dündar, Can (8 January 2006). "'Özel Harp'çinin tırmanış öyküsü". Milliyet (in Turkish). Retrieved 21 September 2008. Özel harpçi olarak eğitilenler daha genç yaşlarda bölgesinde güvenilir, saygın, sözü geçen, (...) önder niteliklere sahip oldukları için seçilmişlerdi. Milletvekili oluşları da bu seçimin doğruluğunu göstermiyor mu?... Birçok olay olmuş, bu teşkilatın tek bir üyesi bu olaylara karışmış mı?