Bombers
As the situation in England grows more dire, more imagery surrounding bombers moving (especially at night) is featured in Larson's book. Bombers, after all, are precursors to a bombing run that will surely decimate the British people. Eventually, the bombers become symbolic of not only destruction and death, but the strength and resilience of the British people.
Cigar and Alcohol
Winston Churchill was well-known for his much he loved to consume cigars and alcohol. Throughout the entirety of the book, Larson paints very vivid pictures of Churchill, his style, and his habits by using cigar and alcohol imagery.
The Sky
As the situation for the United Kingdom and her people grow darker because of the Nazi air campaign, Larson uses darker and darker imagery of the sky. This is symbolic of the tremendous danger the country was facing; it is also paints a picture of how close to destruction the country was.
The Palace
After Neville Chamberlain, the disgraced British Prime Minster, resigned after his failure in appeasing Adolf Hitler, imagery of the Palace is included more frequently. Larson includes this imagery more frequently to underscore the gravity of the decision of who would replace Chamberlain - would it be Hallifax or would it be Churchill? Would the country survive? Or would it fall?