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.
The final remaining relics Darkseid needed were being guarded by A.R.G.U.S. at their HQ, so Darkseid decided to use a Boom Tube to transport the building and all its contents to his base in the Amazon Rainforest. The Female Furies retrieved the relics and put them into place while Wonder Woman fought Darkseid. With the relics' power, Darkseid was able to open a portal to Themyscira. As it is impossible for one who has set foot on Themyscira to return after leaving, Diana was unable to follow Grail through the portal. Grail invaded and began transforming the Amazons into creatures resembling Darkseid's Parademons. As Jason had never actually set foot on Themyscira, he followed Grail and met his mother Hippolyta for the first time since his birth. While Jason and Hippolyta fought off the transformed Amazons, Wonder Woman was able to defeat Darkseid through her love for her deceased father, Zeus, and her half-siblings, calling their spirits out of Darkseid's body and destroying him from the inside. The Amazons captured Grail and imprisoned her in the prison beneath Themyscira, alongside Ares, while Darkseid re-emerged somewhere on Earth. Jason was gifted a magical spear from his mother and returned to Earth.
Although they do not appear in Justice League: War, the Olympian Gods are briefly mentioned by Wonder Woman during a conversation with Superman about the other five heroes, referencing Batman as Hades (who is just as dark and mysterious just as Maxie Zeus did in the "Fire From Olympus" episode of Batman: The Animated Series), Green Lantern as Apollo (the God of Light), Flash as Hermes (the Messenger of Olympus and God of Speed), Cyborg as Hephaestus (the Blacksmith of Olympus and God of Metal) and Shazam as Zeus (God of Lightning).
In order to prove her devotion to her people, the Amazons issued a challenge to Diana, one she would have to meet in two days. In the meantime, the Justice League had tracked the insectoid queen down to a remote mountain. The League journeyed deep into the mountain and encountered the queen. Diana condemned her for the lives she has taken, but the insectoid queen replied that it was Diana’s actions, namely her throwing of the First Born into the depths of the Earth, that awoke the insectoids from their slumber.
In the New 52, the night when she turned 8, Ares appeared before Diana and offered to train her above and beyond the abilities of the Amazons, having seen her potential to eventually become his replacement as the God of War. Though the training was one for one night each month, the year was noticed with Diana improving tremendously compared to the other Amazons.
When she is preparing for the final game (Teaming up with Supergirl, Starfire, Bumblebee and Batgirl against Lobo, Maxima, Bleez, Mongal and Blackfire), the competition is interrupted by Lena Luthor. Wonder Woman starts putting civilians safe, including the Embassador, who, out of fear, orders her to star with him to protect him. She refuses and returns to the batlle, angering the Embassador. She fight Lena and then Brainiac. Upon their defeat, Wonder Woman rejoins with her mother, thinking she dissapointed her by no following the Embassador orders, but Hippolyta is proud instead, stating that Wonder Woman will be an amazing Queen.
Although she initially forbids Diana to be trained as a warrior, Hippolyta reluctantly agrees to let General Antiope, Hippolyta's sister and Diana's aunt, train her, only more rigorously than any other warrior. In 1918, Diana, now a young woman, rescues US pilot Captain Steve Trevor when his plane crashes off the Themysciran coast. The island is soon invaded by German soldiers that had been pursuing Trevor. The Amazons kill the crew, but Antiope sacrifices herself to save Diana. Steve is interrogated with the Lasso of Hestia and reveals that a great war is consuming the outside world and that he is an Allied spy. He has stolen a notebook of the chief chemist Dr. Isabel Maru, who is attempting to engineer a deadlier form of mustard gas under the orders of General Erich Ludendorff from a weapon facility in the Ottoman Empire. Believing Ares to be responsible for the war, Diana arms herself with the "Godkiller" sword, the lasso, and armor before leaving Themyscira with Steve to locate and stop Ares for good.
Many writers have depicted Diana in different personalities and tone; between both of her diametric extremes; that of a worldly warrior, a highly compassionate and calm ambassador, and sometimes also as a naive and innocent person, depending on the writer. What has remained constant, and is a mainstay of the character, is her nurturing humanity: her overwhelming belief in love, empathy, compassion, and having a strong conscience. This trait had been the reason for her induction into the Star Sapphires.
The chief chemist associated with General Ludendorff who specializes in chemistry and poisons. On her role, Anaya said, "Well, it was a small role in this big ensemble, but it is an important character in the story. I'm going to be a big nightmare" for Wonder Woman and Steve Trevor. Describing her character, Anaya said, "Dr. Maru loves rage and enjoys people's pain. She's creating terrible weapons, and her purpose in life is to kill as many people as possible, and provoke as much pain as possible". She researched World War I and Fritz Haber, the scientist who created mustard gas, to prepare for the role. On the character's facial scars, Anaya stated, "I went to Patty Jenkins and asked, 'What happened to her?' And she said, 'She did it on purpose.' I was like, 'What? Patty, you're going further than I ever imagined.' She said, 'She wants to provoke painful suffering, so she tested her own gas on her own face. She wanted to know how deep this form of her gas would go, so she put it on her own face.' You can see half of her face is completely gone. This is the sadistic side of Dr. Maru". She also stated her character "is quite the opposite to the lead role of this movie, one of the strongest characters ever of DC comics, Wonder Woman. I can tell you that Doctor Poison is someone with a capacity to provoke so much pain." On Dr. Maru's relationship with General Ludendorff, Anaya said, "I think that they have a relationship based on loyalty. Ludendorff is a very tormented General that lacks self-confidence. That's why, in part, he takes these drugs that Dr. Poison gives him. They are from different worlds, but they complement each other".
The inspiration to give Diana bracelets came from the pair of bracelets worn by Olive Byrne, creator William Moulton Marston's research assistant and lover. "Wonder Woman and her sister Amazons have to wear heavy bracelets to remind them of what happens to a girl when she lets a man conquer her," quoted Marston in a 1942 interview. "The Amazons once surrendered to the charm of some handsom Greeks and what a mess they got themselves into. The Greeks put them in chains of the Hitler type, beat them, and made them work like horses in the fields. Aphrodite, goddess of love, finally freed these unhappy girls. But she laid down the rule ("Aphrodite's Law") that they must never surrender to a man for any reason. I know of no better advice to give modern day women than this rule that Aphrodite gave the Amazon girls."
“I have the good Sergeant’s letter in which he expresses his enthusiasm over chains for women—so what?” As a practicing clinical psychologist, he said, he was unimpressed. “Some day I’ll make you a list of all the items about women that different people have been known to get passionate over—women’s hair, boots, belts, silk worn by women, gloves, stockings, garters, panties, bare backs,” he promised. “You can’t have a real woman character in any form of fiction without touching off a great many readers’ erotic fancies. Which is swell, I say.”
The Silver Age format for comic books also did not generally favour a lot of story arcs, or at least, not memorable ones. In this period though the character did undergo some consistent changes as she battled a variety of common foes including Kobra, but the changed format gave her the ability to develop more as a character. The silver age stories of Wonder Woman can be broken into a few general arcs – the depowered stories (in the mod girl phase), undergoing tests to re-enter the Justice League of America, a golden age story about her work during the Second World War, her adventures as an astronaut for NASA, the hunt for Kobra, and eventually the return of Steve Trevor and the internal politics of working at the Pentagon. The most famous story which she was involved with at this time was “For the Man Who Has Everything”, a story focused on Superman, but also involving herself and Batman. The first major story arc which she was part of was Crisis on Infinite Earths, which also ended her silver age appearances.