In a rare show of tension between the military and Erdogan, Turkish media reported that Lieutenant General Zekai Aksakalli had wanted to resign from the armed forces after he was moved from special forces chief to a less significant position.
"There can be no such concept of disappointment in the military. Whatever task is assigned, a soldier goes and fulfils their duty there," Erdogan said after Aksakalli was assigned as commander of the army's 2nd Corps, based on the Gallipoli peninsula in northwestern Turkey.
Hurriyet speculated there may have been "discomfort" within the military over the general's public profile in running the Syria operation and the desire to replace him with a younger figure.
Aksakalli led the Turkish military's cross-border "Euphrates Shield" operation launched in August last year aimed at clearing the border zone in northern Syria of both Kurdish militia fighters and the Islamic State extremist group.
More From This Section
"Right now, Zekai Aksakalli has completed his duty in the special forces," Erdogan said, adding that the proposal came during a meeting of the nation's top armed forces body on August 2.
It is hugely unusual for the Turkish president to comment on military appointments in public.
Aksakalli was promoted to lieutenant general in a meeting of the first Supreme Military Council after the July 15 2016 attempted putsch, where his actions made him a figure of national prominence.
He was praised for ordering Sergeant Omer Halisdemir to kill one of the suspected ringleaders, Brigadier General Semih Terzi, on the night of July 15.
By shooting Terzi dead outside special forces headquarters in Ankara, Halisdemir broke the putschists' chain of command although he was subsequently killed by the plotters.
The demotion came after a shake-up of the armed forces as Turkey replaced its land, air and naval commanders of the military during the August 2 meeting.