Which of the following is NOT one of the five military aspects of terrain?

The five military aspects of terrain are key and decisive terrain, cover and concealment, obstacles, avenues of approach, and observation and fields of fire. Weather and climate, while crucial considerations in military operations, are typically seen as separate factors that influence planning and decision-making but do not classify as aspects of terrain itself.

In military tactics, understanding the terrain includes evaluating how it can be used to one’s advantage or how it may pose challenges during operations. Therefore, the correct choice indicates that weather and climate are external factors related to operational conditions rather than the physical characteristics of the land itself. This distinction is important for military planning, as terrain analysis focuses on physical geography and its strategic implications, while weather and climate inform the broader operational environment.