See [Jena].
Augsburg.
Fought 900, between the Germans and the invading Hungarians. The Christians fought gallantly, but were overwhelmed by the numbers of the barbarian cavalry, and in the end suffered a signal defeat.
Auldearn (Civil War).
Fought May 9, 1645, when Montrose and his Highlanders defeated a largely superior force of Covenanters under Sir John Hurry, who was marching northward to raid the lands of the Gordons.
Auray.
Fought September 27, 1364, between the partisans of John de Montfort, and those of Charles of Blois, the rival claimants to the Dukedom of Brittany. The English party, under Sir John Chandos, were besieging Auray, when they were attacked by the French, who were led by Bertrand du Guesclin. Chandos' position, however, was very strong, and the French were unable to make any impression upon it. Meanwhile they were thrown into utter confusion by an attack on their flank, and were ultimately routed, with heavy loss, Charles of Blois being among the slain. Bertrand du Guesclin was captured. De Montfort was shortly afterwards acknowledged by Charles V of France as Duke of Brittany.
Aussig (Hussite War).
Fought 1426, between the Germans under the Emperor Sigismund, and the Taborites, the extreme section of the Hussites, under John Zisca. The Germans were signally defeated.