Hotblack was commissioned into the Royal Norfolk Regiment in 1915 and served in the First World War as an intelligence officer in France before transferring to the then "Heavy Branch" of the Machine Gun Corps (later the Royal Tank Corps) in 1916.
Frederick the Great | Frederick | Frederick II | Frederick II, Holy Roman Emperor | Frederick Russell Burnham | Frederick Roberts, 1st Earl Roberts | Frederick Law Olmsted | Frederick I, Holy Roman Emperor | Frederick Forsyth | Frederick Douglass | Frederick, Maryland | Prince Frederick, Duke of York and Albany | Frederick III | Frederick I | Frederick Delius | Frederick William III of Prussia | John Frederick II, Duke of Saxony | Frederick III, German Emperor | Frederick William IV of Prussia | Frederick Schomberg, 1st Duke of Schomberg | Frederick I, Margrave of Brandenburg-Ansbach | Frederick III, Holy Roman Emperor | Frederick, Prince of Wales | Frederick Funston | Frederick Ashton | John Frederick II | Frederick Wiseman | Frederick Marryat | Lord Frederick Cavendish | Frederick Pollock |