Political rivalries prevent Wallenstein from coming to…
April 1632 CE
Political rivalries prevent Wallenstein from coming to the aid of Johann Tserclaes, Count of Tilly, so Tilly turns to defense, occupying a strategic hill above the River Lech near the city of Rain to prevent the Swedish from crossing into Bavaria.
Gustavus has a bridge of boats constructed across through the night of April 14, and in the morning sends three hundred Finnish Hackapelite troops across the river under fire.
The Hackapelites dig earthworks for batteries which then protect the rest of Gustavas' army as they cross the river.
As soon as his army has crossed the river, Gustavus immediately and successfully storms the hill.
Tilly is shot in the leg early in the battle and is moved to the rear; his second in command, Aldringen, is knocked unconscious with a skull fracture minutes later.
Maximilian I, Elector of Bavaria, orders an immediate retreat to save the now leaderless army, leaving most of the Catholic League's baggage and artillery on the field.
The army itself may only have escaped destruction due to storm and high winds blocking roads in the night that follows.
The immediate result of the battle is that the grand duchy of Bavaria lies open for occupation by the Swedish army, enabling Gustavus Adolphus to threaten the Austrian heartland.