Scrubs C2 implications
Scrubs include a variety of trees that have had their growth stunted because of soil or
climatic conditions. Shrubs comprise the undergrowth in open forests, but in arid and
semiarid areas they are the dominant vegetation. Shrubs normally offer no serious
obstacle to movement and provide good concealment from ground observation however,
they may restrict fields of fire.
FM 5-33 US Army Field Manual, Terrain Analysis, p. 1-2