What are the two supplementary terrain features mentioned?

In the context of land navigation and military operations, supplementary terrain features enhance the understanding of the terrain but differ from major features such as hills and valleys. The terms "cut" and "fill" are critical in identifying and analyzing terrain in specific contexts, particularly in engineering and construction.

"Cut" refers to an area of land that has been excavated or removed, often found where a road crosses through a hill or a rise in the land. This feature is important for understanding the elevation changes that can affect movement and visibility in operations.

"Fill," on the other hand, is used to describe the area where material has been added to raise the land level, creating a solid surface. This is especially relevant in scenarios where movement across terrain needs to account for raised pathways or embankments.

Together, these two features help in understanding how terrain can be manipulated or naturally occurring, which is essential for planning movements, establishing positions, and conducting operations effectively in various environments. This understanding is crucial for Infantry Soldiers, as terrain directly impacts tactical decisions.