Germania Superior in the context of "Agri Decumates"

Lucius Antonius Saturninus was a Roman senator and general during the reign of Vespasian and his sons. While governor of the province called Germania Superior, motivated by a personal grudge against Emperor Domitian, he led a rebellion known as the Revolt of Saturninus, involving the legions Legio XIV Gemina and Legio XXI Rapax, camped in Moguntiacum (Mainz).

The Limes Germanicus (Latin for Germanic frontier), or 'Germanic Limes', is the name given in modern times to a line of frontier (limes) fortifications that bounded the ancient Roman provinces of Germania Inferior, Germania Superior and Raetia, dividing the Roman Empire and the unsubdued Germanic tribes from the years 83 to about 260 AD. The frontier used either a natural boundary such as a river or typically an earth bank and ditch with a wooden palisade and watchtowers at intervals, and a system of linked forts was built behind them.

The path of the limes changed over time following advances and retreats due to pressure from external threats. At its height, the Limes Germanicus stretched from the North Sea outlet of the Rhine to near Regensburg (Castra Regina) on the Danube. These two major rivers afforded natural protection from mass incursions into imperial territory, with the exception of a gap stretching roughly from Mogontiacum (now Mainz) on the Rhine to Castra Regina.

The concept of Germany as a distinct region in Central Europe can be traced to Julius Caesar, who referred to the unconquered area east of the Rhine as Germania, thus distinguishing it from Gaul. The victory of the Germanic tribes in the Battle of the Teutoburg Forest (AD 9) prevented annexation by the Roman Empire, although the Roman provinces of Germania Superior and Germania Inferior were established along the Rhine. Following the Fall of the Western Roman Empire, the Franks conquered the other West Germanic tribes. When the Frankish Empire was divided among Charles the Great's heirs in 843, the eastern part became East Francia, and later Kingdom of Germany. In 962, Otto I became the first Holy Roman Emperor of the Holy Roman Empire, the medieval German state.

During the High Middle Ages, the Hanseatic League, dominated by German port cities, established itself along the Baltic and North Seas. The development of a crusading element within German Christendom led to the Northern Crusades and the establishment of the State of the Teutonic Order along the Southern Baltic coast in what would later become Prussia. In the Investiture Controversy, the German Emperors resisted Catholic Church authority. In the Late Middle Ages, the regional dukes, princes, and bishops gained power at the expense of the emperors. Martin Luther led the Protestant Reformation within the Catholic Church after 1517, as the northern and eastern states became Protestant, while most of the southern and western states remained Catholic. The Thirty Years' War, a civil war from 1618 to 1648 brought tremendous destruction to the Holy Roman Empire. The estates of the empire attained great autonomy in the Peace of Westphalia, the most important being Austria, Prussia, Bavaria and Saxony. With the Napoleonic Wars, feudalism fell away and the Holy Roman Empire was dissolved in 1806. Napoleon established the Confederation of the Rhine as a German puppet state, but after the French defeat, the German Confederation was established under Austrian presidency. The German revolutions of 1848–1849 failed but the Industrial Revolution modernized the German economy, leading to rapid urban growth and the emergence of the socialist movement. Prussia, with its capital Berlin, grew in power. German universities became world-class centers for science and humanities, while music and art flourished. The unification of Germany was achieved under the leadership of the Chancellor Otto von Bismarck with the formation of the German Empire in 1871. The new Reichstag, an elected parliament, had only a limited role in the imperial government. Germany joined the other powers in colonial expansion in Africa and the Pacific.

Germania (/dʒərˈmeɪni.ə/ jər-MAY-nee-ə; Latin: [ɡɛrˈmaːni.a]), also more specifically called Magna Germania (English: Greater Germania), Germania Libera (English: Free Germania), or Germanic Barbaricum to distinguish it from the Roman provinces of Germania Inferior and Germania Superior, was a historical region in north-central Europe during the Roman era, which was associated by Roman authors with the Germanic peoples. According to Roman geographers, this region stretched roughly from the Rhine in the west to the Vistula in the east, and to the Upper Danube in the south, and the known parts of southern Scandinavia in the north. Archaeologically, these people correspond roughly to the Roman Iron Age of those regions.

The Latin name Germania means "land of the Germani", but the etymology of the name Germani itself is uncertain. During the Gallic Wars of the 1st century BC, the Roman general Julius Caesar encountered Germani originating from beyond the Rhine. He referred to their lands beyond the Rhine as "Germania". West of the Rhine, the prosperous Roman provinces of Germania Superior and Germania Inferior, sometimes collectively referred to as "Roman Germania", were established in northeast Roman Gaul, while territories east of the Rhine remained independent of Roman control. The Roman emperors also sought to expand east of the Rhine to the Elbe, but these efforts were hampered by the victory of Arminius at the Battle of the Teutoburg Forest in 9 AD.

Galba (/ˈɡælbə/ GAL-bə; born Servius Sulpicius Galba; 24 December 3 BC – 15 January AD 69) was Roman emperor, ruling for 7 months from 8 June AD 68 to 15 January 69. He was the first emperor in the Year of the Four Emperors and assumed the throne following Emperor Nero's suicide.

Born into a wealthy family, Galba held at various times the positions of praetor, consul, and governor of the provinces of Gallia Aquitania, Germania Superior, and Africa during the first half of the first century AD. He retired from his positions during the latter part of Claudius' reign (with the advent of Agrippina the Younger), but Nero later granted him the governorship of Hispania. Taking advantage of the defeat of Vindex's rebellion and Nero's suicide, he became emperor with the support of the Praetorian Guard.

The Helvetii (Ancient Greek: Ἐλουήτιοι, Latin: Helvētiī [hɛɫˈweːti.iː], Gaulish: *Heluētī), anglicized as Helvetians, were a Celtic tribe or tribal confederation occupying most of the Swiss plateau at the time of their contact with the Roman Republic in the 1st century BC. According to Julius Caesar, the Helvetians were divided into four subgroups or pagi. Of these, Caesar names only the Verbigeni and the Tigurini, while Posidonius mentions the Tigurini and the Tougeni (Τωυγενοί). They feature prominently in the Commentaries on the Gallic War, with their failed migration attempt to southwestern Gaul (58 BC) serving as a catalyst for Caesar's conquest of Gaul.

The Helvetians were subjugated after 52 BC, and under Augustus, Celtic oppida, such as Vindonissa or Basilea, were re-purposed as garrisons. In AD 68, a Helvetian uprising was crushed by Aulus Caecina Alienus.The Swiss plateau was at first incorporated into the Roman province of Gallia Belgica (22 BC), later into Germania Superior (AD 83).The Helvetians, like the rest of Gaul, were largely Romanized by the 2nd century. In the later 3rd century, Roman control over the region waned, and the Swiss plateau was exposed to the invading Alemanni. The Alemanni and Burgundians established permanent settlements in the Swiss plateau in the 5th and 6th centuries, resulting in the early medieval territories of Alemannia (Swabia) and Upper Burgundy. The Helvetii were largely assimilated by their new rulers, contributing to the ethnogenesis of modern Swiss people.

Germanicus Julius Caesar (24 May 15 BC – 10 October AD 19) was a Roman general and politician most famously known for his campaigns against Arminius in Germania. The son of Nero Claudius Drusus and Antonia the Younger, Germanicus was born into an influential branch of the patrician gens Claudia. The agnomen Germanicus was added to his full name in 9 BC when it was posthumously awarded to his father in honor of his victories in Germania. In AD 4 he was adopted by his paternal uncle Tiberius, himself the stepson and heir of Germanicus' great-uncle Augustus; ten years later, Tiberius succeeded Augustus as Roman emperor. As a result of his adoption, Germanicus became an official member of the gens Julia, another prominent family, to which he was related on his mother's side. His connection to the Julii Caesares was further consolidated through a marriage between him and Agrippina the Elder, a granddaughter of Augustus. He was also the father of Caligula, the maternal grandfather of Nero, and the older brother of Claudius.

During the reign of Augustus, Germanicus enjoyed an accelerated political career, entering the office of quaestor five years before the legal age in AD 7. He held that office until AD 9 where he was made praetor after the Pannonian war, and was elected consul for the first time in AD 12. The year after, he was made proconsul of Germania Inferior, Germania Superior, and all of Gaul. From there he commanded eight legions, about one-third of the entire Roman army at the time, which he led against the Germanic tribes in his campaigns from AD 14 to 16. He avenged the Roman Empire's defeat in the Teutoburg Forest and retrieved two of the three legionary eagles that had been lost during the battle. In AD 17, he returned to Rome, where he received a triumph before leaving to reorganize the provinces of Asia Minor, whereby he incorporated the provinces of Cappadocia and Commagene in AD 18.

Turicum was a Gallo-Roman settlement at the lower end of Lake Zurich, and precursor of the city of Zurich. It was situated within the Roman province of Germania Superior and near the border to the province of Raetia; there was a tax-collecting point for goods traffic on the waterway Walensee–Obersee-Lake Zurich–Limmat–Aare–Rhine.