Answer:
"Nurse and Spy in the Union Army"
The Central idea of the memoir "Nurse and Spy in the Union Army" was the display of virtue, patriotism, and philanthropy, which are necessary in a war situation.
The field nurse decided to express her "tithe of gratitude" which she felt towards the people of the Northern States of America for welcoming her in their midst and enabling her to succeed in business and education, and above all, making advancement in her spiritual life.
The field nurse became a spy in order to help the Union to quell the rebellion in the South, so that Truth, Right, and Liberty could prevail in US.
Explanation:
"Nurse and Spy in the Union Army" was an 1865 novel written by S. Emma E. Edmonds in memory of the nurse who disguised herself as a man in order to help the cause of the Union Army during the American civil war. The memoir ended with a heartfelt prayer for peace to God, the Father Almighty, as quoted below:
"O Lord of Peace, who art Lord of Righteousness,
Constrain the anguished worlds from sin and grief,
Pierce them with conscience, purge them with redress,
AND GIVE US PEACE WHICH IS NO COUNTERFEIT!
"
