The Vigla (Greek: Βίγλα, "guard watch", from Latin: vigilia), also known as the Arithmos (Greek: Ἀριθμός, "Number") and in English as the Watch, was one of the elite tagmata of the Byzantine army. It was established in the latter half of the 8th century, and survived until the late 11th century. Along with the Noumeroi regiment, the Vigla formed the guard of the imperial palace in Constantinople, and was responsible for the Byzantine emperor's safety on expeditions.
The Vigla or Arithmos was the third of the imperial tagmata to be established, with its commander attested for the first time in 791. Both names derive from the Latin terminology of the Late Roman army: the term vigilia was applied from the 4th century onto any kind of guard detachment, while arithmos is the Greek translation of the Latin numerus, both titles being used in a generic sense for "regiment". In literary sources, Vigla is more commonly used than Arithmos, and is also the title used in the seals of its commanders.
Vigla (Greek: Βίγλα, "watch, lookout") may refer to:
Pisoderi (Greek: Πισοδέρι) is a village 17 km west of Florina, Greece.Nearby,5 khm, is the ski resort Vigla.
First mentioned in an Ottoman defter of 1481, the village, then known as Ipsoder, had only twelve households.
The ski center is located on Mount Verno, and currently has five lifts and ten trails. The summit of the resort is 1939m above sea level, with a total vertical drop about 420m. The resort has a view of the Lake Prespa, on the border between Greece, Albania and Macedonia.
Coordinates: 40°47′10″N 21°14′49″E / 40.78611°N 21.24694°E / 40.78611; 21.24694