In 51 C.E., he was elevated to the position of sole Prefect of the Praetorian Guard by Agrippina the Younger, wife and niece of Claudius Caesar.
Mūsu ēras 51. gadā Agripīna Jaunākā, imperatora Klaudija sieva un brāļameita, Burru iecēla par pretoriāņu prefektu.