tantumque severitate profectum ut vexillum veteranorum, non amplius quingenti numero, easdem Tacfarinatis copias praesidium cui Thala nomen adgressas fuderint.
Translation :
So beneficial was this rigour that a detachment of veterans, numbering not more than five hundred, routed those same troops of Tacfarinas on their attacking a fortress named Thala.
Edition :
Annales ab excessu divi Augusti. Cornelius Tacitus. Charles Dennis Fisher. Clarendon Press. Oxford. 1906.
Complete Works of Tacitus. Tacitus. Alfred John Church. William Jackson Brodribb. Sara Bryant. edited for Perseus. New York. : Random House, Inc. Random House, Inc. reprinted 1942.