Which king, who reassumed the throne upon his son's death, had in his service the Flemish-born military engineer George Prosper Verboom?
Philip V of Spain Philip V (Spanish: "Felipe V" , French: "Philippe" , Italian: "Filippo" ; 19 December 1683 – 9 July 1746) was King of Spain from 1 November 1700 to 15 January 1724, when he abdicated in favour of his son Louis, and from 6 September 1724, when he reassumed the throne upon his son's death, to his own death 9 July 1746.
Duke of Orléans Duke of Orléans (French: "Duc d'Orléans" ) was a title reserved for French royalty, first created in 1344 by Philip VI in favor of his son Philip of Valois. Known as princes of the blood ("princes du sang"), the title of Duke of Orléans was given, when available, to the oldest brother of the king. Thus, they formed a collateral line of the French royal family, with an eventual right to succeed to the throne should more senior princes of the blood die out.