One of the greatest things about a campaign is the endless decisions.
"The shortest way would be through the pass at Cirith Ungol, but that is narrow and dangerous to move an army through."
And so he decided to march along the mountains north, and then west, to the haunted pass of Cirith Gorgor, and the untold legions of the Black Lord.
"Why so glum, wizard? Does the mere thought of Sauron's vast forces overwhelm your spirit?
"This war is without final hope. Victory cannot be achieved by force of arms, whether you sit here to endure siege after siege, or march out to be overwhelmed. You have only a choice of evils."
"Then, if the choice be mine, I choose to march!"