1. - 5.) Orcs are not the most effective of minions. Think of their
constant quarrels (e.g. when hauling Merry and Pippin towards Isengard; in
Cirith Ungol; the tracker and the other Orc in Mordor). Their
subservience to Sauron means a correspondingly reduced
intelligence.
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All that is gold does not glitter,
Not all those who wander are lost;
The old that is strong does not wither,
Deep roots are not reached by the frost.
From the ashes a fire shall be woken,
A light from the shadows shall spring;
Renewed shall be blade that was broken,
The crownless again shall be king.