Devèze was President of the Liberal Party in 1927-1932 and was a minister of defense (1920–1923, 1932–1936 and 1949–1950), vice prime-minister (1949–1950), minister of interior (1939–1940) and of economy (1946).
Devèze was President of the Liberal Party in 1927-1932 and served as a defense minister (1920–1923, 1932–1936 and 1949–1950), vice prime-minister (1949–1950), interior minister (1939–1940) and economic minister (1946).