crossword puzzle

In the build up to long planned invasion of Nazi occupied Europe, Operation Overlord, nervous tension dominated the Supreme Headquarters Allied Expeditionary Force (SHAEF) headquarters. When a series of crossword clues appeared in the Daily Telegraph with answers that were closely guarded operational codewords, the spooks were spooked. Had the whole plan been blown by a puzzle? The clue seemed innocuous: Red Indian on the Missouri. […]

Solving the puzzle