Very impressive book. I learned a lot from it. I may have to buy a copy. (Read it from the library)
After Shattered Sword, read
https://www.amazon.com/DAY-Through-German-Eyes-Hidden-ebook/dp/B00VX372UE/ref=pd_sim_351_2?_encoding=UTF8&psc=1&refRID=6TN49TMZR6REGBP3N100