Book excerpt: The British Isles, it is often believed, have not been invaded for nearly a thousand years. In fact, as Norman Longmate reveals in this highly entertaining book (the successor to his acclaimed Defending the Island), foreign soldiers have landed on British soil on many occasions.In this definitive study of a long-neglected subject Norman Longmate make constant use of original sources, including contemporary eyewitness accounts. These are woven into an enthralling narrative, packed with fact - about weapons, ships, armies and fortresses - spiced with anecdote, and ranging over international and political as well as military and naval history. The result is above all an exciting story, which shows how, against all the odds, the British people managed to retain their freedom from the days of James I to those of George VI.