Upper Rhine France Southern Italy North Germany and Scandinavia Pyrenees Americas Naval battles The siege of Cambrai took place from 20 March to 19 April 1677 during the 1672–1678 Franco-Dutch War; then part of the Spanish Netherlands, it was invested by a French army under the duc de Luxembourg.

However, the Dutch position stabilised, while concern at French gains brought support from Frederick William of Brandenburg-Prussia, Emperor Leopold and Charles II of Spain.

[3] The French position weakened in early 1674, when Denmark-Norway joined the Alliance in January, followed by the February Treaty of Westminster making peace between England and the Dutch Republic.

[5] Although peace talks were ongoing, Louis followed his normal policy of taking the offensive, then negotiating from strength; the French used the 1676 campaign season to capture Condé-sur-l'Escaut, Bouchain, Maubeuge and Bavay.

[6] The plan for 1677 was to take Valenciennes, Cambrai and Saint-Omer, completing the French frontière de fer or "iron border;" Louis calculated this would leave the Dutch little reason to continue.

[9] Over the winter of 1676/1677, the French blockaded the garrison; on 4 December 1676, Louis signed an order forbidding the sale of grain or forage to Cambrai, with large fines for any village found to have done so.

[12] This meant the surrender of Cambrai was only a matter of time but against Vauban's advice, the outworks were unsuccessfully assaulted by French infantry on 10 April, leading to over 500 fatalities, including one of his nephews.