The National and Nomadic Guard of Chad is one of five defence and security forces in Chad. Article 200 of the Constitution of 1996 states that the duties of the GNNT are the protection of politicians, government officials, and government buildings; the maintenance of order in rural areas; and the guarding of prisons and prisoners. These responsibilities remain unchanged in the new Constitution of 2018 but are now in Article 195.

The Chad National Army consists of the five Defence and Security Forces listed in Article 185 of the Chadian Constitution that came into effect on 4 May 2018. These are the National Army, the National Police, the National and Nomadic Guard (GNNT) and the Judicial Police.