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.
Ferdinand II of Portugal "Dom" Ferdinand II (Portuguese: "Fernando II") (29 October 1816 – 15 December 1885) was a German prince of the House of Saxe-Coburg and Gotha-Koháry, and King of Portugal "jure uxoris" as the husband of Queen Maria II, from the birth of their son in 1837 to her death in 1853.