The Battle of Alexander at Issus is Albrecht Altdorfer's (c. 1480 -1538) most famous oil painting. Painted in 1528-9, the oil painting depicts a young Alexander the Great in 333 BC, at the point of victory over the Persian army of King Darius III in the Battle of Issus. The work was commissioned by the Duke of Bavaria and passed from the Bavarian royal collection to the Alte Pinakothek in Munich.

Altdorfer and the painting
Albrecht Altdorfer made significant developments in landscape and etching. He was also an architect, an engraver, and the leader of the Danube school of German painting. He was a near contemporary of Albrecht Dürer, and Grünewald's, with the influence of the latter more evident in his art. The Heavenly Host above the Virgin and Child in the Isenheim Altarpiece has been compared to The Battle of Alexander at Issus. This is shown in The Battle of Alexander at Issus by the strange night sky.

Altdorfer was one of the first to paint pure landscapes with no figures, though most of his output was more conventional religious scenes. The Battle of Issus, is atypical in his work, in both its size and subject-matter; both being dictated by the commission he was given. However, his style here is a development of that of a number of miniatures of battle-scenes he had done much earlier for Maximilian I, Holy Roman Emperor in his illuminated manuscript Triumphal Procession in 1512-14.Despite, or because of lying outside his usual range, the oil painting has become his most famous work. He signed the painting with a monogram in the lower left hand corner, dating it 1529, and also inscribed it: "ALBRECHT ALTORFER ZU REGENSPVRG FECIT" on the bottom edge of the banner panel in the sky.

The historical Battle of Issus
 
The Alexander Mosaic, found in Pompeii, is another famous depiction of the battle.Main article: Battle of Issus
The city of Issus was located in southeast Asia Minor, close to where Iskenderum, Turkey is situated today. Even though the battle took place in modern Turkey, in the oil painting the Alps and what are obviously German cities can be clearly made out,[2] as the amount of the earth that could be seen from a very high view-point is hugely exaggerated. The battle itself was a tactical triumph for Alexander, and probably his most famous victory. Modern historians estimate that his Macedonian army lost 7,000 (perhaps 16%) against 30,000 deaths in Darius III's Persian army. However, the inscriptions on the oil painting, probably supplied by Aventin, the Bavarian court historian, refer to much larger numbers.

Subject and provenance
 
Detail showing Alexander the Great.The subject is explained in the banner sign hanging down from the sky in the painting, originally in German but replaced at an unknown date by a Latin inscription that translates as: "Alexander the Great defeating the last Darius, after 100,000 infantry and more than 10,000 cavalrymen had been killed amongst the ranks of the Persians. Whilst King Darius was able to flee with no more than 1,000 horsemen, his mother, wife, and children were taken prisoner". In addition Alexander and Darius are identified by tiny inscriptions on their harness and chariot respectively, and banners carried by the armies have further inscriptions.The oil painting was ordered by Duke William IV of Bavaria. as one of the initial three in a series of eight depicting battles during classical antiquity ordered by William IV Five of these oil paintings are still found in the Pinakothek, while the remaining three are today located in the Nationalmuseum in Stockholm, having been looted by the Swedish army in the Thirty Years War. These eight oil paintings celebrating male heroes were eventually accompanied by eight other paintings celebrating female heroes from both the Bible and antiquity. Altdorfer took the commission very seriously, and renounced the office of Major of Regensburg to finish it. Large scale history painting was very new to Germany at this date, and the great originality of Altdorfer's vision may benefit from his lack of models to follow.

The oil painting was one of many taken back to Paris by Napoleon, and its fame largely dates from this period. Supposedly it was hanging in his bathroom at Saint-Cloud when the Prussians captured it in 1814. As late as 1740 a German critic had considered it to be by Albrecht Dürer, despite the two signatures of Altdorfer. The German writer Schlegel was one of many who saw it in the Louvre and marvelled; he called it a "small painted Iliad".

Analysis of the painting
 
Detail of the setting sunBehind the huge armies are the mountains of Asia Minor in front of the Mediterranean Sea and Cyprus. In the background are Palestine, Sinai, the Red Sea, and Africa with the meandering Nile River heading for the Nile Delta in front of the gently bent horizon and the dramatic setting sun. In the upper left corner is the crescent moon hanging over the Persian king fleeing the scene in his chariot, a reference to the "people of the crescent moon", e.g. the Turks. The presence of the two celestial bodies reflects the cosmic dimensions ascribed to the battle, and supported by a Biblical quote describing the event as a part of God's plan for mankind - where the kingdom of Alexander the Great was succeeded by the Roman Empire, in turn succeeded by the German Holy Roman Empire. The entire painting is thus an exhortation to the German Emperor in the 16th century to crush the Turks then threatening Vienna.

Altdorfer has attempted to represent the historical accounts he had of the number of soldiers present at the battle, and the two armies become masses of people, so that the two opposing forces cannot be told apart. The armour that most or all of the soldiers wear is unmistakably that of the 16th century.The work uses a complex and impossible bird's-eye view, which starts relatively close to the ground at the front of the oil painting, but rises to hundreds of feet for the background. Though the Tower of Babel, the Pyramids of Egypt and probably the Temple of Jerusalem are represented, most of the buildings make no attempt to reflect ancient architecture, and are extravagant imaginary buildings in a German Renaissance style.