Conversation so far:
What did Lew Wallace do at Fort Henry?
Lew Wallace's brigade, which was attached to Brig. Gen. Charles F. Smith's division, was ordered to occupy Fort Heiman, an uncompleted Confederate fort across the river from Fort Henry.
What else did Lew Wallace do at Fort Henry besides occupy Fort Heiman, an uncompleted Confederate fort across the river from Fort Henry?
Lew Wallace's troops secured the deserted fort and watched the Union attack on Fort Henry from their hilltop position.
Did Lew Wallace and his troops do anything else there besides securing the deserted fort and watching the Union attack on Fort Henry from their hilltop position?
On February 6, after more than an hour of bombardment from the Union gunboats, Confederate Brig. Gen. Lloyd Tilghman, surrendered Fort Henry to Grant.

Question: What did he do at Donelson?
Self-contained rewrite: What did Lew Wallace do at Donelson?