All the French medium and heavy tanks of 1940 are in this title: Renault FT, Renault R-35, FCM-36, Hotchkiss H.38, Char B1bis, Renault D-1, and Renault D-2.The first volume of this two part series will cover the infantry tanks and battle tanks that served in 1940. Starting with the Renault FT of World War I fame, it will cover the modernization of the FT in the inter-war years. The focus of the infantry tank section will be on the attempts to replace the FT with designs such as the Renault R-35, FCM-36, and the Hotchkiss H.38. Derivatives of these types will also be covered such as the R-40. France also had a separate family of battle tanks starting with the Renault D-1, Renault D-2, and finally the best known tank of the campaign, the Char B1 bis. This book will provide a brief development account these tanks types, covering the tactical rationales for their design and their basic technical features. It will also briefly address their performance in the 1940 campaign, pointing out the salient features of the combat record.