2016 failed coup turkey orders detention of 300 military personnel

You're referring to the 2016 Turkish coup d'état attempt!

Yes, on July 16, 2016, a group of military officers attempted to overthrow the government of President Recep Tayyip Erdoğan in Turkey. The coup attempt was led by a faction of the Turkish Armed Forces, including high-ranking officers and generals.

After the coup attempt was put down, the Turkish government launched a massive purge of the military, judiciary, and other institutions to root out suspected supporters of the coup. As a result, over 300 military personnel were detained, including many high-ranking officers.

The purge was carried out under a state of emergency declared by the government, which gave it broad powers to arrest and detain individuals suspected of being involved in the coup. Many of those detained were accused of being members of the Gülen movement, a religious and social movement led by Fethullah Gülen, who was a former ally of Erdoğan but had fallen out with him.

The purge was widely criticized by human rights groups and other organizations, who accused the government of using the coup attempt as a pretext to crack down on political opponents and suppress dissent. Many of those detained were held incommunicado for extended periods, and some were subjected to torture and other forms of mistreatment.

The purge also had significant consequences for Turkey's military and political institutions. Many high-ranking officers were forced to retire or were arrested, and the country's military was significantly weakened. The government also took control of the judiciary and other institutions, giving it greater control over the country's political and legal systems.

Overall, the 2016 Turkish coup d'état attempt and the subsequent purge had significant consequences for Turkey's political and social landscape, and continue to be a major issue in the country to this day.