 Complete the following phrase:  Violence increased on both sides from 1954 to 1956. But in 1957 the Minister of Interior declared a state of emergency in Algeria, and the government granted extraordinary powers to General Massu. The Battle of Algiers, from January to October 1957, remains to this day a textbook example of counter-insurgency operations. General Massus 10e division parachutiste, 10th Paratroop Division made widespread use of methods used during the 