Taekwon-Do also has a defends from all direction like other martial art like this :P
First i will tell you about some secret :pAree = Lower
Momtong = Middle
Olgool = High
Bakat = Outer
An = Inner
so you can adjust your block with any condition
Maki - Block
Aree Maki - Lower Block
Momtong Maki - Middle (Body) Block
Olgool Maki - High (Face) Block
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Palmok Maki - Forearm Block
Sohn Nal Maki - Knife Hand Block
Hechyo Maki - Wedge Block
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Kawi Maki - Double Block
With the direction and block i give, you can combine it. so your
block is very usefull in any direction :)