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.
Louis, Grand Dauphin Louis of France (1 November 1661 – 14 April 1711) was the eldest son and heir of Louis XIV, King of France, and his spouse, Maria Theresa of Spain. As the heir apparent to the French throne, he was styled Dauphin. He became known as Le Grand Dauphin after the birth of his own son, "Le Petit Dauphin". As he died before his father, he never became king.