 Complete the following phrase:  The Droungarios of the Watch , droungarios tēs viglēsviglas, sometimes anglicized as Drungary of the Watch, was originally a senior Byzantine military post. Attested since the late 8th century, the droungarios commanded the Vigla or Watch, one of the elite professional cavalry regiments tagmata of the middle Byzantine period, and was in charge of the Byzantine emperors personal security. From , the office was disassociated from its military origin and was transformed into a senior judicial position, thereafter usually referred to as the Grand Droungarios of the Watch μέγας δρουγγάριος τῆς βίγληςβίγλας, megas droungarios tēs viglēsviglas. The office continued to exist as a mostly honorific court dignity in the Palaiologan era, until the very 