Strategos in the context of "Theme of Bulgaria"

Alcibiades (/ˌælsɪˈbaɪədiːz/; Ancient Greek: Ἀλκιβιάδης; c.450–404 BC) was an Athenian statesman and general. The last of the Alcmaeonidae, he played a major role in the second half of the Peloponnesian War as a strategic advisor, military commander, and politician, but subsequently fell from prominence.

During the course of the Peloponnesian War, Alcibiades changed his political allegiance several times. In his native Athens in the early 410s BC, he advocated an aggressive foreign policy and was a prominent proponent of the Sicilian Expedition. After his political enemies brought charges of sacrilege against him, he fled to Sparta, where he served as a strategic adviser, proposing or supervising several major campaigns against Athens. However, Alcibiades made powerful enemies in Sparta too, and defected to Persia. There he served as an adviser to the satrap Tissaphernes until Athenian political allies brought about his recall. He served as an Athenian general (strategos) for several years, but enemies eventually succeeded in exiling him a second time. He took refuge in Persian territory and was eventually assassinated, reportedly at the instigation of Sparta.

Aratus of Sicyon (Ancient Greek: Ἄρατος ὁ Σικυώνιος; 271–213 BC) was a politician and military commander of Hellenistic Greece. He was elected strategos of the Achaean League 17 times, leading the League through numerous military campaigns including the Cleomenean War and the Social War.

Aratus was exiled to Argos at the age of seven, after his father, the magistrate of Sicyon, was killed in a coup. In 251 BC, he led an expedition composed of other exiles which freed Sicyon from tyranny, and assumed power in the city. Sicyon joined the Achaean League, in which Aratus would later be elected strategos. In his first major campaign as strategos, he seized the Macedonian-held citadel of Acrocorinth, previously believed impregnable.

Gylippus (/dʒɪˈlɪpəs/; Greek: Γύλιππος) was a Spartan general (strategos) of the 5th century BC; he was the son of Cleandridas, who was the adviser of King Pleistoanax and had been expelled from Sparta for accepting Athenian bribes in 446 BC and fled to Thurii, a pan-Hellenic colony then being founded in the instep of Italy with Athenian help and participation. His mother may have been a helot, which meant he was not a true Spartiate but a mothax, a man of inferior status. Despite this, from an early childhood he was trained for war in the traditional Spartan fashion and on reaching maturity had been elected to a military mess, his dues contributed by a wealthier Spartiate patron. For an individual of marginal origins, war was an opportunity to gain honor and eminence.

When Alcibiades urged the Spartans to send a general to lead the Syracusan resistance against the Athenian expedition, Gylippus was appointed (414 BC), his arrival was a turning point of the struggle. More daring than Nicias, the Athenian commander he faced, he was able to gain an upper hand by driving the Athenians from key strategic locations and essentially breaking the siege. When Athens sent Demosthenes with reinforcements, he too was defeated by Gylippus, which ultimately led to the downfall of the Athenian campaign in Syracuse.

The Cleomenean War (229/228–222 BC) was fought between Sparta and the Achaean League for the control of the Peloponnese. Under the leadership of king Cleomenes III, Sparta initially had the upper hand, which forced the Achaean League to call for help the Macedonian king Antigonos Doson, who decisively defeated Cleomenes in the battle of Sellasia in 222.

In 235 BC, Cleomenes III (r. 235–222 BC) ascended the throne of Sparta and began a program of reform aimed at restoring traditional Spartan discipline while weakening the influence of the ephors, elected officials who, though sworn to uphold the rule of Sparta's kings, had by the time of Cleomenes come to wield extraordinary political power in the Spartan system. When, in 229 BC, the ephors sent Cleomenes to seize a town on the border with Megalopolis, the Achaeans declared war. Cleomenes responded by ravaging Achaea. At Mount Lycaeum he defeated an army under Aratus of Sicyon, the strategos of the Achaean League, that had been sent to attack Elis, and then routed a second army near Megalopolis.

Magister militum (Latin for "master of soldiers"; pl.: magistri militum) was a top-level military command used in the late Roman Empire, dating from the reign of Constantine the Great. The term referred to the senior military officer (equivalent to a war theatre commander, the emperor remaining the supreme commander) of the empire. The office continued to exist and evolve during the early Byzantine Empire. In Greek sources, the term is translated either as strategos or as stratelates (although these terms were also used non-technically to refer to commanders of different ranks).

Military strategy is a set of ideas implemented by military organizations to pursue desired strategic goals. Derived from the Greek word strategos, the term strategy, when first used during the 18th century, was seen in its narrow sense as the "art of the general", or "the art of arrangement" of troops. and deals with the planning and conduct of campaigns.

The father of Western modern strategic studies, Carl von Clausewitz (1780–1831), defined military strategy as "the employment of battles to gain the end of war." B. H. Liddell Hart's definition put less emphasis on battles, defining strategy as "the art of distributing and applying military means to fulfill the ends of policy". Hence, both gave the preeminence to political aims over military goals.

Theodosius III (Greek: Θεοδόσιος, romanized: Theodósios) was Byzantine emperor from c. May 715 to 25 March 717. Before rising to power and seizing the throne of the Byzantine Empire, he was a tax collector in Adramyttium. In 715, the Byzantine navy and the troops of the Opsician Theme, one of the Byzantine provinces, revolted against Emperor Anastasius II (r. 713–715), acclaiming the reluctant Theodosius as emperor. Theodosius led his troops to Chrysopolis and then Constantinople, the capital, seizing the city in November 715. Anastasius did not surrender until several months later, accepting exile in a monastery in return for safety. Many themes viewed Theodosius to be a puppet of the troops of the Opsician Theme, and his legitimacy was denied by the Anatolics and the Armeniacs under their respective strategoi (generals) Leo the Isaurian and Artabasdos.

Leo declared himself emperor in the summer of 716 and allied himself with the Umayyad Caliphate, the Islamic empire; Theodosius sought aid from the Bulgarians under Khan Tervel (r. 700–721), setting a firm border at Thrace and ceding the Zagoria region to the Bulgarians, as well as stipulating the payment of tribute to them. Leo then marched his troops to Constantinople, seizing the city of Nicomedia, and capturing many officials, including Theodosius' son, also named Theodosius. With his son in captivity, Theodosius took the advice of Patriarch Germanus and the Byzantine Senate, and negotiated with Leo, agreeing to abdicate and recognize Leo as emperor. Leo entered Constantinople and definitively seized power on 25 March 717, allowing Theodosius and his son to retire to a monastery. Exactly when Theodosius died is uncertain, but it may have been on 24 July 754.

Michael I Rangabe (also spelled Rhangabe; Greek: Μιχαὴλ Αʹ Ῥαγκαβές, romanized: Mikhaḗl 1 Rhangkabés; c. 770 – 11 January 844) was Byzantine emperor from 811 to 813. A courtier of Emperor Nikephoros I (r. 802–811), he survived the disastrous campaign against the Bulgars and was preferred as imperial successor over Staurakios (r. 811–811), who was severely injured. He was proclaimed emperor by Patriarch Nicephorus I of Constantinople on 2 October 811.

Michael's policies were generally conciliatory, and he was overwhelmingly influenced by the iconodule clerics Nikephoros and Theodore the Stoudite. He improved relations with the Franks, even to the point of recognising Charlemagne as an emperor – although not "of the Romans" – and requesting papal arbitration in the Moechian controversy. His half-hearted leadership of the campaign against the Bulgars resulted in defeat in the Battle of Versinikia. The stratēgos of the Anatolic Theme, Leo the Armenian, a popular and successful general, abandoned Michael on the battlefield but was proclaimed emperor by the military, in what was the last military overthrow of an emperor in Byzantine history. Michael was pressured to abdicate, and he retired to a monastery. His sons were castrated to prevent the continuation of his dynasty.

Leo V the Armenian (Greek: Λέων ὁ Ἀρμένιος, Léōn ho Arménios; c. 775 – 25 December 820) was the Byzantine emperor from 813 to 820. He is chiefly remembered for ending the decade-long war with the Bulgars, as well as initiating the second period of Byzantine iconoclasm.

A senior general of Armenian origin, Leo distinguished himself under Nikephoros I and Michael I Rhangabe, eventually becoming the stratēgos of the Anatolic Theme. Taking advantage of Michael's defeat at the Battle of Versinikia, he forced the emperor to abdicate in his favour. He was able to withhold the blockade of Constantinople by Krum of Bulgaria and, after Krum's death, concluded a 30-year peace with his successor Omurtag.