sentence: She began operating for the French Forces of the Interior at the age of 18 under the codename "Rainer". citation On July 23, 1944, at age 19, she became known for the killing of a German officer, whom she shot dead.
modified: She began operating for the French Forces of the Interior at the age of 18 under the codename "Rainer". citation On July 23, 1944, at age 19, she became known for the killing of an German most offic, whom she shot dead.