The Battle of Ramillies, fought on 23 May 1706, is a major engagement of the War of the Spanish Succession.

For the Grand Alliance – Austria, England, and the Dutch Republic – the battle follows an indecisive campaign against the Bourbon armies of King Louis XIV of France in 1705.

Although the Allies had captured Barcelona that year, they had been forced to abandon their campaign on the Moselle, had stalled in the Spanish Netherlands, and suffered defeat in northern Italy.

Yet despite his opponents' setbacks Louis XIV is desirous of peace – but he wants it on reasonable terms.

For this end, and in order to maintain their momentum, the French and their allies swing over to the offensive in 1706.The campaign begins well for Louis XIV's generals: in Italy, Marshal Vendôme had defeated the Austrians at the Battle of Calcinato in April, while in Alsace Marshal Villars had forced the Margrave of Baden back across the Rhine.

Encouraged by these early gains Louis XIV had urged Marshal Villeroi to go over to the offensive in the Spanish Netherlands and, with victory, gain a 'fair' peace.

Accordingly, the French Marshal sets off from Leuven (Louvain) at the head of 60,000 men and marches towards Tirlemont, as if to threaten Zoutleeuw (Léau).

Also determined to fight a major engagement, the Duke of Marlborough, commander-in-chief of Anglo-Dutch forces, assembles his army – some 62,000 men – near Maastricht, and marches past Zoutleeuw.

With both sides seeking battle, they soon stumble upon one other on the dry ground between the Mehaigne and Petite Gheete rivers, close to the small village of Ramillies.In less than four hours Marlborough's Dutch, English, and Danish forces overwhelm Villeroi's and Max Emanuel's Franco-Spanish-Bavarian army.

The Duke's subtle moves and changes in emphasis during the battle – something his opponents had failed to realize until it was too late – had caught the French in a tactical vice.

The battle proves decisive.

With their foe broken and routed, the Allies are able to fully exploit their victory.

Town after town subsequently fall,s including Brussels, Bruges, Antwerp; by the end of the campaign, Villeroi's army has been driven from most of the Spanish Netherlands.

With Prince Eugene's subsequent success at the Battle of Turin in northern Italy, the Allies have imposed the greatest loss of territory and resources that Louis XIV will suffer during the war.

The year 1706 has indeed proved to be the Allies' annus mirabilis.