The Danish Auxiliary Corps was a corps of 7,000 Danish soldiers sent to fight with William of Orange who was at war in Ireland. Disappointed with his alliance with France's King Louis XIV, Christian V of Denmark–Norway in 1689 entered into a treaty of military assistance with King William III of England. The corps was transported to Ireland, fighting against the Jacobites, participating in the battles of the Boyne and Aughrim, as well as the sieges of Limerick, Cork, Kinsale, Athlone, and Galway. In early 1692 the corps was transported to Flanders for future service in English pay.

The siege of Cork took place during the Williamite war in Ireland in the year of 1690, shortly after the Battle of the Boyne when James II attempted to retake the English throne from King William III.