Refighting The Battle Of Pfaffenhofen

THE Battle of Pfaffenhofen was fought 275 years ago last month, near the River Ilm in Bavaria, between a Habsburg army under the Hungarian Count Károly Batthyány and a French army under Count Henri de Ségur.
Habsburg troops had been forced out of Bavaria late in 1744 by Franco-Bavarian forces, allowing Elector Charles VII, who was also Holy Roman Emperor, to reoccupy his state capital Munich, where he died in January 1745.
This opened the way for peace talks between Austria and Bavaria, but when they stalled, Maria Theresa - Queen of Hungary, Archduchess of Austria and future Holy Roman Empress (by marriage) - ordered a renewed invasion of the electorate.
Bavarian forces fell back to defensive positions behind the River Lech, apparently without informing de Ségur.
He found himself with about 7,000 men, including Palatinate troops of dubious enthusiasm, facing some 10,000 Austro-Hungarians.
The town of Pfaffenhofen quickly fell, but de Ségur formed a defensive line between wooded hills and Scheyern Abbey, which had close connections to the Bavarian ruling House of Wittelsbach.

Overview of the battlefield with the Franco-Palatinate forces in the foreground between wooded high ground and the river - little more than a stream really - beside Scheyern Abbey

Batthyány's light troops - pandurs and hussars - got around de Ségur's flanks, prompting him to order a withdrawal, which turned into a rout, at least by his German troops. In all he lost more than a third of his force and most of his munitions.*
The battle knocked Bavaria out of the War of the Austrian Succession, although Charles VII's son, Maximilian III, was confirmed in his possession of the electorate, in return agreeing to support Maria Theresa's husband, Francis of Lorraine, in upcoming elections for a new Holy Roman Emperor.
*As usual it is difficult to be sure of numbers, both for the size of the armies and the extent of casualties. Numbers used here are those taken by Wikipedia from historian David Chandler.