Is this correct

Loreta Velazquez was not the only woman (who's, whose) help was used during the Civil War,
nor was being a foot soldier the only way women served in that war.
She was not in combat, but Mary Walker, then in her (thirties, thirty's), served in the Union
army. She served with such distinction that she became the first woman to receive the Medal of
Honor, the (military's, militarys') highest-ranking medal. It is awarded only to members of the armed
(forces, force's) and only for gallantry in action.
Mary (Walker's, Walkers) specialty was surgery. Just as shocking as her profession- the role
of military surgeon was not (everyone's, everyones') idea of the proper role for a woman in the 1860s-
were Dr. Walker's opinions on how women should dress. She said that women (shouldn't, should'nt)
wear tight corsets because such corsets were injurious to (women's, womens') health. She even considered
long skirts unhealthy. She felt so strongly on the subject of women's attire that she herself
determined to wear long pants. Army (regulations, regulations') did not permit such attire for a
woman. (Who's, Whose) permission was required for her to do so? It required special permission
from the U.S. Congress, but Dr. Mary Walker finally won that battle of the Civil War.
She did not live to see the ending of her final battle. After the war, she went back to her private
practice of medicine and began fighting for a constitutional amendment to allow women to vote.
Congress passed the Twentieth Amendment in 1920. But Mary Walker died before (its, it's) adoption.