The release by Warner Bros. of the box office success DUNKIRK film provides Christians with a very useful evangelistic opportunity (e.g. to witness outside of cinemas). Sadly, the film makes no mention whatsoever of the National Day of Prayer held on the day before the Dunkirk evacuation began on May 27th 1940. It was the prayers of a humbled nation which made all the difference to the amazing outcome of the mission to rescue over 300,000 soldiers. An evangelistic tract explaining God's overruling in all that happened has been specially prepared, which is freely downloadable in a double-sided A5 format.