Despite the propaganda, Green was an actual military plan that was given real consideration.
Although Hitler had postponed Sea Lion on 17 September 1940,
he took up a personal interest again on 3 December 1940
after hearing of radio reports alluding to a British invasion of Ireland. Hitler then ordered Raeder's naval staff to investigate the feasibility of occupying Ireland to pre-empt any British attempt.However, at the time
Hitler seemed already convinced that any landing should be by invitation only: