This is a good basic overview of the subject, compiled and assembled in the best 'coffee table dilletante' mode, i.e covering a lot of ground but all quite lightly, and copiously illustrated.
Structurally this book reminds one of Haythornthwaite's Napoleon's Military Machine, in that it starts with an overview of military organisation and tactics, before proceeding to a chronological run through the major land campaigns and battles, ending with a much shorter recounting of major naval actions.
Whilst in structure and format the book is very like Haythornthwaite's, obviously the scope is much larger, taking in all the nations, as opposed to just France.
Both Haythornthwaite's and Glover's books are excellent for general overviews and a light introduction to a massive subject. Naturally the serious Napoleonic student will also want much more specialised books on their specific interests, but books like these are fun, informative and a pleasure to browse through pictorially as well as for the written content.
Despite the massive scope and slim heavily illustrated format the book's both well written and densely packed with information. There are occasional nuggets of great interest, such as Robert Fulton's attempts to sell his 'Nautilus' submarine to both the English and the French (Fulton was an American).
Against such intriguing detail one can contrast the brief 'Restraint of Trade' and Epilogue sections, where the brevity and wide-ranging scope of the book leave me feeling that Glover is sketching rather too broadly in trying to cover all bases, also revealing an (all too typical of British writers on this subject) Anglo-centric perspective.
Print quality and selection of illustrations are excellent. All in all a great little general Napoleonic companion , especially attractive to those coming to the subject fresh, but still useful and engaging for the grizzled old war dog who's shelves are groaning with Napoleonic books.