-- **PzKpfw II A**
-- **PzKpfw II B**
-- **PzKpfw II C**
-- **PzKpfw II D**
-- **PzKpfw II E**
+- **PzKpfw II A**: An early production batch, often grouped with A1-A3, representing the initial design concepts.
+- **PzKpfw II B**: Incorporated further minor improvements based on field experience, primarily concerning engine access and internal stowage.
+- **PzKpfw II C**: Featured more substantial improvements, including thicker front armor and a revised hull structure to enhance survivability.
+- **PzKpfw II D**: A fast reconnaissance variant with a new [Christie suspension](/wiki/Christie_suspension) and a more powerful engine, intended for cavalry divisions.
+- **PzKpfw II E**: Similar to the D model, it also used the Christie suspension system, focusing on high-speed reconnaissance roles.
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