When Bucharest was occupied by the Central Powers at the end of 1916, he withdrew to Iași. There, he agitated against the spring 1918 Treaty of Bucharest. After the war, he returned to the national capital, where he established Bucovina publishing house, which he put to effective use for the benefit of other writers. He headed "Convorbiri Literare" during the last phase of its first run (1939-1944). Torouțiu published numerous works of literary history. His "magnum opus" is the thirteen-volume "Studii și documente literare", which appeared between 1931 and 1946, spanning some 8000 pages and leading Perpessicius to call him "a Hurmuzachi of literary history". The first volume was done in collaboration with Gheorghe Cardaș; the remainder, alone. The work includes documents and pieces of literary history he found in his personal library, in archives and in institutions. He was elected a corresponding member of the Romanian Academy in 1936; the new communist regime stripped him of membership in 1948. Additionally, due to the pro-Nazi Germany line "Convorbiri Literare" had taken during World War II, he was barred from publishing in 1945. Wracked by terminal illness, he died at his Bucharest home; his wife committed suicide the following day.