In 1942 the United States War Department distributed a handbook to American Servicemen advising them on the peculiarities of the 'British, their country, and their ways'.
The guide was intended to lessen the culture shock for those embarking on their first trip to Great Britain, and for the most part, abroad. The instructions are a wonderful interpretation of the differences between the two allies. By turns hilarious and poignant, many observations remain quaintly relevant today.