They were due for some time off, and it was always a good thing to know your enemy.
Perhaps it was time she came to know her enemy, all the better to put him off guard.
"Then we still do not know our enemy, and attack could come from any direction."
The great thing in combat was to know your enemy.
"We must try to know our enemy, at least a little."
She intended to know her enemy, this one if no other.
And knowing our enemy is the first step to winning the war.
He knew his enemy and where to strike to do the most damage.
To know one's enemy was to be able to prepare to fight it.
When entering in to battle you should get to know your enemy.