Who was Albert Sydney Johnston?
A Confederate president Jefferson Davis appointed him postmaster general. At the end of the war, he, like other members of the Confederate government, found himself in a
federal prison, where he spent several months.

B resigned from the U.S. Army, declared himself a Texan, and
joined the Confederate army as a captain.

C Having served as a general in the Texan army, the United
States Army, and the Confederate States army, he remains
the highest-ranking American officer ever killed in combat.

D took command and recaptured Galveston, giving Texas a
temporary reprieve from the Union blockade. He strictly
enforced the draft and allowed commanders in sub-districts
to rule with dictatorial powers.