Commandant-general is a military rank in several countries and is generally equivalent to that of commandant.
Commandant general is the highest rank in the Argentine National Gendarmerie, and is held by the national director of the gendarmerie and his senior deputies. Depending on the appointment, it may be equal to any Argentine army rank from brigade general to the highest Argentine army rank, lieutenant general.
During the Irish Civil War of 1922-23, the Irregulars, or anti-Treaty IRA, applied this term to the leaders of their various brigades throughout the country. The term was acquired from the Boer rank, through veterans of the Irish Transvaal Brigade.
Comandante generale (commandant general), in Fascist Italy's MVSN, was the title of the head of the Blackshirts, held by Benito Mussolini from 1922 to 1943. Nowadays, is the title held by the commander of the Carabinieri.
Historically, commandant-general (Portuguese: comandante-geral) has been the traditional title of the appointment of commanding officer in several security forces in Portugal and Brazil.
Presently, in Portugal is the title of the general officer commanding the National Republican Guard (GNR). In the past, it was also the title of the commanding officers of the Public Security Police, the former Fiscal Guard and the former Portuguese Legion.