This is one of my most popular lesson activities. Here students will collate information to both sides of the historiographical debate and make links between their factors to create a visual map which they can use for an extended piece of written analysis. I am especially proud of the level of precision and detail in the historical content here as this is a niche area of mine formed whilst working for the Royal British Legion on the Somme a few years ago. The 60 cards are broken down and colour-coordinated for differentiation purposes into personality, tactics, technology, and politics in order to promote a factor-led response. I really hope you enjoy this activity and that your students get as much from it as mine do.