Battlefield Weather Effects — FM 34-81-1

This manual provides some of the more common critical weather (and environmental) effects data and applies that information to specific operations, systems, and personnel. Inclement weather degrades battlefield operations, affects weapons and other systems, and plays a major role in the effectiveness of troops in the field. This data is intended to support the brigade and battalion S2 and staff. It is applicable to combat, combat service, and combat service support units and is intended for use by Active Component (AC), Reserve Components (RC), and Army National Guard (ARNG) units in both training and combat situations.