The Operational Art of War II

Tip 1: 
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Attack helicopters should be used in four cases: to screen or 
anchor exposed flanks, as airborne reconnaissance units, as 
escorts for transport helicopters, and to engage enemy armor
from long range. 

Tip2: 
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Remember that from the 1970s and on, most western armies have
been equipped with advanced night-fighting capabilities. As a
result, western armies, in particular the United States and its
NATO allies, are much better at conducting round-the-clock 
operations than eastern armies.