array
...the enemy forces were arrayed on the opposite hill

attack
the enemy attacked at night

beat back
they beat back the enemy troops

bitter
a bitter enemy

break through
the army broke through the enemy lines

descend on
the enemy descended on to the town

desert
to desert to the enemy

dismount
to dismount the batteries of the enemy

enemy
enemy forces

engage
to engage with the enemy

engagement
they had an engagement with the enemy

flank
to take the flank of the enemy

go over to
to go over to the enemy

hew
to hew the enemy to pieces

hold off
the troops held off the enemy

insidious
an insidious enemy

likeness
an enemy in the likeness of a friend

move in on
the enemy troops moved in on the camp

pass over
to pass over to the enemy

professed
a professed enemy

render up
to render up a town to the enemy

repel
to repel an enemy

reply
to reply to the enemy's fire

retake
to retake a fort from the enemy

rout
to rout the enemy

scour out
to scour the enemy out of the land

summon
they summoned the enemy to surrender

swoop
to swoop down on the enemy