Theoden struggles with doubts at helms deep, but what conclusion does he come to?

Theoden wonders if Helms Deep could withstand a huge attack.

“Had I known that the strength of Isengard was grown so great, maybe I should not so rashly have ridden forth to meet it, for all the arts of Gandalf. His counsel seems not now so good as it did under the morning sun.”

He resolves to die fighting with such honor that songs will be made about this battle for future generations,

“Maybe we shall cleave a road, or make such an end as will be worth a song- if any be left to sing of us hereafter.”