Stronghold: A History of Military Architecture

accommodation approach armed army artillery assault attack authorities base bastions battle became besieged Britain British building built camp cannon Castle century completely construction continued course covered curtain defenders direct ditch earth effective embrasures emperor Empire employed enabled enemy England entrance equipment erected existing face fact field fire force fortifications fortress forts foundations four French frontier garrison gates German guns Henry hillforts houses invader iron Italy keep kilometres King land later living located means metres military military architecture missiles moat mounted Norman operations perhaps period position prevent protection rampart range result River Roman roof round royal served side siege similar soldiers solid square stone stronghold structures surrounded thick timber tion took towers troops usually walls weapons whole wide wooden World