Aquae Calidae, Bulgaria well as from Kabyle, Mesambria (now Nessebar), Odessos, Histria, Tomis, Byzantium, Abdera, Maroneia and the islands of the Aegean, the oldest from Apollonia Pontica from the 5th century BC. The first baths at the Sanctuary of the Three Nymphs originated when the Roman Empire under Lucullus conquered the region, during the Third Mithridatic War in 72 BC. Under Trajan (98-117) nearby Anchialos became the administrative centre of the region and the baths were expanded and extended with two more swimming pools. During this time the Via Pontica was built connecting Constantinople via Deultum, Anchialos, Aquae Calidae with Dorostorum and Sexaginta
Escadrille SPA.31 use of a Roman archer as the "escadrille" insignia. In October, "Escadrille N 31" shifted to support "II Armee". The following month, the unit was incorporated into "Groupe de Combat II". "Escadrille 31" began receiving SPADs on 7 January 1917. However, it would not totally rearm with SPADs until 17 September, when it was renamed "Escadrille SPA 31". The "escadrille" would serve as part of "GC II" through the remainder of the war. When the armistice came, it had been credited with 42 aircraft and four observation balloons destroyed, and have earned two citations from Army Corps. Escadrille SPA.31 Escadrille