Battle of Annual
The Moroccan troops generally remained loyal during the Rif War of the early 1920s, although there were reports of mutiny at Yat el Bax following the major Spanish defeat at the Battle of Annual in 1921. During this period the Regulares and the Spanish Legion ("Tercio") emerged as the elite corps of the Spanish Army - long-serving professionals on more or less continuous active service, attracting the best officers. These included the future "caudillo" Francisco Franco who served initially with the Regulares (from 1913) before transferring to the newly raised Tercio (whose troops were mostly Spaniards) as second in command and commander of its 1st Battalion in 1920.