The Duke of Marlborough lost no time in utilizing the advantages gained by the victory of Blenheim.

He at once raised the siege of Ingoldstadt, which, when all the country was in his power, must sooner or later surrender, and detached a portion of the force which had been there engaged to besiege Ulm, an important fortress on the Danube.

Then with the bulk of his army he marched to the Rhine, crossed at Philipsburg on the 6th of September, and advanced towards Landau.
Marshal Villeroi had constructed an entrenched camp to cover the town; but on the approach of the victor of Blenheim he fell back, leaving Landau to its fate.

Marlborough followed him, and made every effort to bring the French to a battle; but Villeroi fell back behind the Lauter, and then behind the Motter, abandoning without a blow one of the strongest countries in Europe.
On the 11th of September Ulm surrendered, with 250 pieces of cannon; and upon the following day, Landau was invested.

The Prince of Baden with 20,000 men conducted the siege, and Marlborough and Eugene with 30,000 covered the operations.