Answer to "Carve Her Name With Pride".
The first codes are straight forward and the answers are messages which make sense. They are actual messages used by the agents mentioned in France during the Second World War.
The last code has been made more difficult by encoding it around the wrong way. The agent encoded it wrongly!!
In the trade they called it an indecipherable and it took lots of extra
effort and time in decoding it. Sometimes they would have up to 50 codebreakers working on a particular indecipherable.  
This one does work out!!

Sorry I haven't got the answer here but I can assure you there is one.
Good luck!!!!