The patronage of the Armorican contested the 16th finals of the Coupe de France in 1921 and 1927, the 32nd finals in 1923, 1926, 1928, 1930, 1931 and 1935. In 1926, the Armoricaine took away the title of champion of France patronage by winning in the final against Saint-Jean-de-Luz (3-0). The goalkeeper Alexis Thépot, who obtained a selection while he was part of the Armoricaine squad in 1927 against England, is one of the club's brightest players during this period.