Which class of dismounted terrain is least demanding physically?

Class 1 terrain is identified as the least demanding physically because it typically consists of flat and well-drained land that is relatively easy to navigate. This type of terrain often presents minimal obstacles and requires less effort to traverse compared to other classes. Individuals operating in Class 1 environments can expect to expend less energy than they would in more challenging terrains, thus allowing for easier movement and the capacity to cover greater distances with less fatigue.

In contrast, the other classes of terrain progressively increase in difficulty. Class 2 terrain introduces some moderate challenges such as gentle slopes or minor obstacles that require a bit more physical exertion. Class 3 includes steeper or more uneven ground that can demand significant stamina and strength, while Class 4 terrain is characterized by rugged, steep, and potentially hazardous conditions that require high levels of physical fitness and advanced navigation skills. The escalating difficulty of these terrain classes highlights why Class 1 is recognized for its relative ease and low physical demands.