In late 1942, England, still standing alone in Western Europe, was strategizing how to free Nazi-occupied France.
On a night in September lit by the full moon, two young women, Lise de Baissac and Andree Borrel, parachuted out of a low-flying airplane into the French countryside. The women would carry out a top secret mission: setting up safe houses and channeling airdropped weapons to arm the nascent resistance.
They were part of a program by the Special Operations Executive, a group set up in 1940 outside of military command, to "set Europe ablaze," in the words of Winston Churchill.
Sarah Rose tells their story in "D-Day Girls," a meticulously crafted new book.
It had been decided that there needed to be an Allied invasion of France to force Hitler to fight a two-front war. That invasion was eventually called D-Day, and it took place in June of 1944.
The F Section, standing for French Section, recruited women because there was a shortage of manpower. There was only one problem: Women had never been behind enemy lines before. But Churchill gave his blessing.
Recruits had to be British citizens who could speak perfect French, who could "act French" and blend in with the natives. F Section women came about this qualification in a number of ways; some were originally French citizens who married a Brit, gaining citizenship that way; de Baissac was raised in Mauritius, a French-speaking British colony.
Once deployed to France, they watched and waited — for meetups with other agents, for airdrops of weapons, for coded messages that could be heard at the end of the BBC's French-speaking broadcasts. A nonsense saying such as "The dog sneezed on the curtains" at the end of the broadcast could mean an important message for their mission.