Athena Promachos, or Athena Poliouchos.
One of Athena’s principal responsibilities — arguably her earliest, most essential — is the defense of civilization, i.e. cities and municipalities. From Homeric epic and in art from the archaic into the classical periods, the goddess is portrayed in defensive role as Ἀθήνη Πολιάς or Πολιοῦχος (the defender or holder of the city). At Troy, Homer secures a temple and quickly detailed cult on the acropolis (Il. 6.297-310), and he knows her also as the protectress of Athens in the Catalog of Ships (Il. 2.549-50). She played similar roles at Chios (Hdt. 1.160), Gortyn, and in many other locales. The cult title Promachos (the champion, i.e. the one who fights in front) is manifest frequently, though not exclusively of Athena/Pallas — i.e Heracles and Hermes Promachos.
    A colossal bronze Athena Promachos created by Phidias stood defensively on the Acropolis between the Propylaea and the Parthenon. It was visible from Sounion (Paus. 1.28.2) There for a millennium, until its removal by Justinian to Constantinople in the 6th century, the Phidian bronze was destroyed in the sack of Constantinople in 1203/4.
    Athena Promachos was associated anciently in myth and iconography with the Palladium. While it is technically, by mythological clarifications, a wooden effigy of Athena’s childhood friend Pallas who perished from a fatal blow delivered by the young goddess, the Palladium wears the aegis with gorgoneion as a commemoration. Not infrequently the talismanic statue, which assured the military endurance of the city possessing it, was seen as a representation of Athena herself (cf. Hdt. 4.189). The clandestine abduction of the Trojan Palladion by Diomedes and Odysseus was seen as the beginning of Troy’s end; and the legend that Aeneas rescued the Palladion for transport to Italy, where it eventually came to be safeguarded in the Temple of Vesta near the Forum Romanum, continues the mythological belief of the statue’s abiding power. Athens, according to Pausanias (1.28) claimed also to maintain the Palladium for the sake of civic protection.
    
    
     Further Reference—— Graf, Fritz (Princeton) and Ley, Anne (Xanten), “Athena, Athene”, in: Der Neue Pauly, Herausgegeben von: Hubert Cancik,, Helmuth Schneider (Antike), Manfred Landfester (Rezeptions- und Wissenschaftsgeschichte). Consulted online on 18 November 2020
    
     Demargne, P. 1984. LIMC s.v. “Athena”, vol. II pp. 955-1044 w/ plates 702-765.
    
     Villing, Alexandra. 2009. LIMC Supplementum 2009 s.v. “Athena”, pp. 107-23.
    
     Jenkins, R.J.H. 1947. “The Bronze Athena at Byzantium.” Journal of Hellenic Studies 67:31-3 with plate 10. — https://doi.org/10.2307/626779 / https://www.jstor.org/stable/626779