English-language books about combat and the Maginot Line are few in number. Most histories are in French language. Here are some recommended works that are currently in print:
Alcorn, William, Fortress 10: The Maginot Line 1928–45 (Osprey Publishing Ltd: Oxford, 2003)
Frieser, Karl-Heinz, and Greenwood, John T., The Blitzkrieg Legend: the 1940 Campaign in the West (Naval Institute Press: Annapolis, Maryland, 2005)
Kaufmann, J. E., and Kaufmann, H. W., Fortress France: The Maginot Line and French Defenses in World War II (Praeger Security International: Connecticut, 2006)
Mary, Jean-Yves, and Hohnadel, Alain, Hommes et ouvrages de la ligne Maginot, Volumes 13 (Histoire & Collections: Paris, 2000–2003)
Pallud, Jean Paul, Blitzkrieg in the West: Then and Now (After the Battle: London, 1991)