[3] Walter became an academic in the UK, where the couple made their home.
Marcelle Kellermann became a teacher of modern languages in Leeds and at Bingley College of Education in Yorkshire.
[6] She was said to have "pioneered the teaching of French to primary school children".
[7] Later, the couple retired to London, and she wrote a book about her wartime experiences, A Packhorse Called Rachel, published in 2007 by Grosvenor House.
The Interpreter, published by CreateSpace in 2014, resulted from her research into the activities of a Nazi officer, "Frank von Heugen", who used his language skills to become an Allied informer.