The accession of the Duke of Anjou (grandson of Louis XIV.) to the throne of Spain, in violation of recent treaties, had re-kindled the flame of war in Europe, and King William once more united with the continental states to reduce the exorbitant power of France. In the mean time the Kings of France and Spain proclaimed the Pretender King of Great Britain, by the title of James III. This proceeding made the nation sensible of the latent designs of France; the preparations for war were expedited; and in the beginning of March, 1702, the FOURTH HORSE embarked at Blackwall and Deptford. But the death of King William occurring (8th of March) before the transports sailed, the regiment was ordered to disembark and march into quarters in the villages near London. Queen Anne, however, continued the course of policy adopted by her predecessor, and on the 11th of March the regiment was ordered to re-embark and proceed to Holland, where it arrived towards the end of the same month, and went into cantonments near Breda. The FOURTH HORSE, with three other regiments of British cavalry and two of infantry,[22] were stationed near Breda, until the 21st of June, when they marched under the orders of Lieut.-General Lumley to join the army. The French attempted to intercept these regiments; but by forced marches they eluded the enemy, and arrived at the camp near Duckenburg, towards the end of the same month. The French, having obtained possession of the Spanish Netherlands, the campaign commenced on the Dutch frontiers. The FOURTH HORSE, forming part of the army commanded by the Earl of Marlborough, advanced against the immense force of the enemy under the Duke of Burgundy and Marshal Boufflers. Having crossed the Maese near Grave, the British troops were engaged in several daring and skilful manœuvres in North Brabant and the province of Limburg, by which the designs of the enemy were frustrated. When the allies besieged _Venloo_, the _Fourth Horse_ were with the troops employed in observing the enemy, and in protecting the supplies of forage, provision, and ammunition: they were also similarly engaged during the sieges of _Ruremonde_ and _Stevenswaert_. These fortresses having been captured, the regiment quitted its camp at Soutendael about midnight, on the 10th of October, and, having crossed the little river Jaar, advanced with the army towards the city of _Liege_, where it arrived about three in the following morning, when the suburb of St. Walburg was found in flames, the French having, upon the sudden advance of the allies, attempted the destruction of the suburbs by fire, and afterwards retired into the citadel, and into a detached fortress called the _Chartreuse_.