Read it through once

We were driven over Sir Colin Campbell's route by a British officer, and when I arrived at the Residency I was so familiar with the road that I could have led a retreat over it myself; but the compass in my head has been out of order from my birth, and so, as soon as I was within the battered Bailie Guard and turned about to review the march and imagine the relieving forces storming their way along it, everything was upside down and wrong end first in a moment, and I was never able to get straightened out again. And now, when I look at the battle-plan, the confusion remains. In me the east was born west, the battle-plans which have the east on the right-hand side are of no use to me.