Turkey's military is getting creative in its efforts to fight the Gulen movement, which is said to have been behind the military coup attempt in 2016. This month, the army will join the navy in using an algorithm designed to ferret out Gulenists among their ranks.

The movement was founded by Turkish cleric Fethullah Gulen, who lives in exile near Saylorsburg, Pennsylvania, trying to avoid extradition. The Turkish government refers to him and his followers as the Fethullah Gulen Terrorist Organization, or FETO. It's no surprise, then, that officials have named the ambitious algorithm the Fetometer.

If one were to ask Gulenists which officer they hate most in the Turkish Armed Forces (TSK), the reply should definitely be navy Rear Adm. Cihat Yayci, who has been leading the "de-Gulenification" effort among TSK ranks. For the past year, the algorithm Yayci and his staff developed has been used to identify naval officers and noncommissioned officers allegedly linked to the Gulenist network. To manage the Yayci team's efforts, the navy established the Office of Judicial Monitoring, Research and Administrative Procedures in its Personnel Department.

Beginning this month, the Turkish army is also using the system, which hasn't been adopted yet by the Turkish air force, the gendarmerie, coast guard or national police.