When Sauron saw that his Haradrim allies could no longer make it back to Osgiliath safely,
he decisively ordered the Witch-king of Angmar to retreat.
As Sauron's trusted servant, the Witch-king of Angmar felt his master's summons and hurriedly led all his troops toward Minas Morgul.
Close to the battlefield, the Witch-king understood all too well that the situation no longer allowed him to lead his forces back to reclaim those ruins.
Even the slightest delay could leave him facing attacks from the south, north, and west.
So when Allen reached the Crossroads with nearly four thousand elite cavalry and over a thousand infantry,
he arrived just in time to see column after column of Haradrim stumbling into the Morgul Valley in utter disarray.
It was a poisonous expanse that lay on the only route to Minas Morgul, easy to defend and difficult to assault.
A great bridge spanned the Morgulduin River, connecting the valley to the Harad Road.
It was summer, the season of abundant blossoms, and swathes of pale flowers bloomed throughout the Morgul Valley, giving off an eerie glow and the nauseating stench of decay.
With the enemy retreating into their stronghold, Allen burned down the bridge leading into the valley.
He had no intention of leading his soldiers in an assault on Minas Morgul.
First, the place was no longer fit for human habitation, so taking it back would serve little purpose.
Second, the Haradrim stationed in the Morgul Valley had lost relatively little of their strength. Forcing an attack would be unwise.
Moreover, a road behind Minas Morgul led straight to the Plain of Gorgoroth. Though rugged and difficult, it was still passable for an army.
As soon as Allen attacked Minas Morgul, enemy reinforcements would come pouring in.
Stationing a strong force here to