William Le Queux,
The Invasion of 1910 — Book II
“ This huge body of German solders, who for years had passed in England as civilians, was, of course, of enormous use to Von Kronhelm, for they acted as guides not only on the march and during the entry to London, but materially assisted in the victorious advance in the Midlands. Indeed, the Germans had for years kept a civilian army in England, and yet we had, ostrich-like, buried our heads in the sand and refused to turn our eyes to the grave peril that had for so long threatened. ”
