🌐EnglishEnglishDeutschEspañolFrançaisPortuguêsالعربية한국어中文日本語EntityQ869296· pop 7· linked from 203 articlesDouble-Cross SystemAlso known as XX SystemBritish World War II counter-espionage operationAvailable in 7 languagesEspañolFrançaisDeutschPortuguêsالعربيةHebrewvia Wikidata sitelinks · CC0ConnectionsOperation FortitudeEntityEnigmaEntityCategoriesDouble-Cross SystemEspionage techniques