TheCodeBreakers
Nothing would jell. Gloomy intelligence officers could
reach no definite conclusions. Another attack was certainly in the offing,
but unless they could ascertain its location, France might be lost.
Into this dismal atmosphere on the morning of June 3 burst Guitard
of the Service du Chiffre, excitedly waving an intercept. One of the G.H.Q.
cryptanalysts, applying the keys that Painvin had sent there, had just
read a cryptogram sent at 4:30 a.m., only a few hours earlier:
CHI-126 FGAXA XAXFF FAFFA AVDFA GAXFX FAAAG DXGGX
AGXFD XGAGX GAVGX AGXVF VXXAG XFDAX GDAAF DGGAF
FXGGX XDFAX GXAXV AGXGG DFAGD GXVAX XFXGV FFGGA
XDGAX ADVGG A
Direction-finders reported that it had been transmitted by the German
High Command. The addressee, Die, was known from traffic analysis and
direction-finding to be the 18th Army's general staff in Remaugies—a
town situated just above the concavity in the German lines. Its plaintext
annaabi.ee 
