"1st Invasion of Britain" . "28 warships" . "he invaded Britain" . "Unknown" . . "Invasions of Britain" . "invasion of Britain in 55 BC" . "Britannia" . . . "both Roman invasions of Britain" . . "Localclient kingsandtributary tribesset up by Rome" . . "600 transports" . . . "Invasion of Julius Caesar" . . "Roman Republic" . "conquest of Britain" . "17,500\u201325,000 legionaries" . . "54 BC" . "his invasion of Britain" . . "an invasion" . "2,000 cavalry" . "55 BC" . . . "failed to conquer Britain 90 years earlier" . "initial invasion" . "100 transport ships" . "Julius Caesar's invasions of Britain" . . . "Julius Caesar's invasions of Britain" . . "invaded Britain" . "his invasions of Britain" . "Britain" . "Julius Caesar invades Britain" . "Julius Caesar's landing in Britain" . . "Caesar's raid in force" . "military campaigns in Britain" . . "55\u201354 BC" . "2nd Invasion of Britain" . . "invasions of Britain attempted by Julius Caesar" . "expedition to Britain" . "Celtic Britons" . "7,000\u201310,000 legionaries plus cavalry and auxiliaries" . "invasion of Britain" . . . "54 BC" . "Roman invasion of Britain" . "Julius Caesar's first invasion of Britain" .