Coming to America for the first time, Wonder Woman comes upon a wailing army nurse. Inquiring about her state, she finds that the nurse wanted to leave for South America with her fiancé but was unable due to shortage of money. As both of them looked identical and Wonder Woman needed a job and a valid identity to look after Steve (who was admitted in the same army hospital), she gives her the money she had earned earlier to help her go to her fiancé in exchange for her credentials. The nurse reveals her name as Diana Prince, and thus, Wonder Woman's secret identity was created, and she began working as a nurse in the army.
Arcane Lore Expert: Wonder Woman, as both an Amazon demigoddess and an antiquities expert, possesses immense knowledge of and skill in wielding mystical artifacts and arcane lore, notably her Sword of Athena and Lasso of Hestia. Her encyclopedic knowledge was demonstrated when Wonder Woman reacted in dismay to Lex Luthor's speech (knowing how he had twisted the Olympians' history concerning Zeus and Prometheus), when she instantly identified a Parademon in Commissioner Gordon's sketch, and when she explained the history behind Steppenwolf and the 3 Mother Boxes to the remainder of the Justice League.
Storylines The 18th Letter • A League of One • A Piece of You • Amazons Attack! • Beauty and the Beasts • Birds of Paradise • Bitter Rivals • Blood • Bones • The Bronze Doors • The Challenge of Artemis • Challenge of the Gods • Champion • The Circle • The Contest • Counting Coup • Depths • Destiny Calling • Devastation • Devastation Returns • Down to Earth • Ends of the Earth • Expatriate • Flesh • The Game of the Gods • God Complex • Gods and Mortals • Gods of Gotham • Godwar • Guts • Iron • Judgment in Infinity • Land of the Lost • Levels • Love and Murder • Lifelines • Marathon • The Men Who Moved the Earth • A Murder of Crows • Odyssey • The Pandora Virus • Paradise Island Lost • Revenge of the Cheetah • Rise of the Olympian • Sacrifice • Second Genesis • Stoned • Three Hearts • Trinity 98 • The Twelve Labors • War • Warkiller • War-Torn • Who is Donna Troy? • Who is Troia? • Who Is Wonder Woman? • The Witch and the Warrior • Wrath of the Silver Serpent
The Diana Prince alias also played an important role after the events of Infinite Crisis. Wonder Woman was broadcast worldwide killing a villain named Maxwell Lord, as he was mind controlling Superman into killing Batman. When Wonder Woman caught him in her lasso, demanding to know how to stop Superman, Maxwell revealed that the only way to stop him was to kill Lord, so as a last resort Diana snapped his neck. To recover from the trauma of killing another person, the Amazon went into a self-imposed exile for one year. On her return to public life, Diana realized that her life as a full-time celebrity superhero and ambassador had kept her removed from humanity. Because of this she assumed the persona of Diana Prince and became an agent at the Department of Metahuman Affairs. During a later battle with the witch Circe, a spell was placed on Diana leaving her powerless when not in the guise of Wonder Woman.