On occasions Wonder Woman has employed a magical sword of unknown (though presumably Amazon) origin. This sword has been used most specifically against those with the power of invulnerability as invulnerability generally does not work against magical items. It is generally represented as a short sword. In Wonder Woman (vol. 4) #15, Hephaestus modifies Diana's bracelets so that she can manifest two short swords from them during battle.
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.
“Anniversary, which we forgot entirely,” Olive Byrne wrote in her secret diary in 1936. (The diary remains in family hands.) During the years when she lived with Marston and Holloway, she wore, instead of a wedding ring, a pair of bracelets. Wonder Woman wears those same cuffs. Byrne died in 1990, at the age of 86. She and Holloway had been living together in an apartment in Tampa. While Byrne was in the hospital, dying, Holloway fell and broke her hip; she was admitted to the same hospital. They were in separate rooms. They’d lived together for 64 years. When Holloway, in her hospital bed, was told that Byrne had died, she sang a poem by Tennyson: “Sunset and the evening star, / And one clear call for me! / And may there be no moaning of the bar, / When I put out to sea.” No newspaper ran an obituary.
In the "Watchmen" sequel "Doomsday Clock," Doctor Poison attended the meeting established by the Riddler and mentioned a rumor that Wonder Woman was forcefully dragged back to Themyscira by her fellow Amazons. Wonder Woman comes out of hiding to address the United Nations, hoping to defuse the metahuman arms race. However, the summit is interrupted by Black Adam, the Creeper, and Giganta, who take advantage of the absence of most of Earth's superheroes to attack the UN at the time when the superheroes were confronting Doctor Manhattan on Mars.
Diana is depicted as a masterful athlete, acrobat, fighter and strategist, trained and experienced in many ancient and modern forms of armed and unarmed combat, including exclusive Amazonian martial arts. With her godlike abilities of incalculable superhuman strength, nigh-invulnerability, speed, flight, healing factor and semi-immortality, Diana’s fighting prowess is enhanced. In some versions, her mother trained her, as Wonder Girl, for a future career as Wonder Woman. From the beginning, she is portrayed as highly skilled in using her Amazon bracelets to stop bullets and in wielding her golden lasso. Batman once called her the "best melee fighter in the world". The modern version of the character is known to use lethal force when she deems it necessary. In the New 52 continuity, her superior combat skills are the result of her Amazon training, as well as receiving further training from Ares, the God of War, himself, since as early as her childhood. The Golden Age Wonder Woman also had knowledge in psychology, as did her Amazon sisters.