Complex sentence: The Literary Battalion was a company of students from the University of Santiago de Compostela, it was most notably formed during the Spanish War of Independence (1808--1814).
Split into simpler sentences: The Literary Battalion was a company of students from the University of Santiago de Compostela. Although the name was used for a number of different incarnations of the group, the most notable was during the Spanish War of Independence (1808--1814).