Master Combatant: Wonder Woman, having been trained in combat tactics by Menalippe and Antiope, is a tremendously skilled, fierce, and formidable hand-to-hand combatant (being at least on par with Batman), a master of a vast array of unique Amazonian martial arts, as well as an expert in most types of melee weapons (though she most frequently uses her bracelets, lasso, sword, and even shield). She has centuries of combat experience, with her claiming to have fought and defeated several beings from "other worlds" (which includes even the fearsome God of War Ares himself). Wonder Woman swiftly became the greatest warrior of Themyscira, her tremendous combat skills eventually becoming enough to rival even those of her mentor Antiope and ultimately surpassing her upon acquiring full potential, due to the latter (upon Hippolyta's insistence) training her much harder than any Amazon ever before her. Hence, Wonder Woman defeated the notorious Slipknot with effortless ease, as well as many World War I soldiers (she defeated and killed even the enhanced General Ludendorff relatively quickly), and numerous Parademons single-handedly, seamlessly incorporating hand-to-hand combat, sword-fighting with the God Killer (and later with the Sword of Athena), and the Lasso of Hestia in her own personalized, formidable style. Indeed, Wonder Woman's tremendous skill and exceptionally versatile style make her capable of effectively holding her own against either more experienced or more powerful opponents, even the mighty God of War Ares (albeit only with considerable effort and initial failure, given his superior combat experience, and her need to use a non-violent mindset), the New God Steppenwolf, an enraged resurrected Superman, and the gigantic Doomsday, with her managing to temporarily knock the latter fearsome monster down (by smashing his feet from under him with her shield), and even temporarily restrain him with her Lasso of Hestia, as well as cut off his right arm with the Sword of Athena. Indeed, had Doomsday not had his incredibly adaptable healing factor, it is safe to assume that Wonder Woman's tremendous combat skills would have allowed her to ultimately defeat him. Moreover, even when Wonder Woman's sword was destroyed by Ares, she still held her own against the more powerful Old God. However, although she put up a considerable fight, Wonder Woman was ultimately fairly quickly defeated by the resurrected Superman, and was only saved by Lois Lane's timely intervention.
The "Lies" story arc runs parallel with and explores Diana's search. No longer able to get into Mount Olympus, Diana tracks down Barbara Ann Minerva, the Cheetah, to get help. Cheetah agrees to help in exchange for Diana aiding her in killing the god Urzkartaga and ending Minerva's curse. The pair battle their way through Urzkartaga's minions, the Bouda, and defeat Andres Cadulo, a worshiper of Urzkartaga that planned to sacrifice Steve Trevor to the plant god. Once reverted to her human form, Minerva agreed to help Wonder Woman find her way back to Paradise Island. During this time, Wonder Woman reconnects with Steve. Minerva eventually realizes Paradise Island is an embodiment of emotion instead of a physical place, so Wonder Woman and Steve head out to find the island. They succeed and Wonder Woman is greeted by her mother and sisters, though Steve senses something is wrong. Wonder Woman comes to realize nothing is as she remembers and, upon using the Lasso of Truth, discovers everything she thought she knew was a lie: she never really returned to Themyscira after departing with Steve years earlier. The revelation shatters Diana's mind and she is left nearly insane. Veronica Cale, a businesswoman who has been desiring to find Themyscira and the leader of Godwatch, sends a military group called Poison after her, but Diana's state has left her vulnerable and oblivious to the danger she and Steve are in. Steve wards them off long enough for them to be rescued, and reluctantly places Diana in a mental hospital so she can get help. While there she comes to grasp the reality she thought she knew was false, eventually coming out of her stupor and able to rejoin the others in tracking down Veronica Cale, who is trying to find Themyscira.
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.
(For the record, Marston and Olive Byrne’s son, Byrne Marston, who is an 83-year-old retired obstetrician, thinks that when Marston talked about the importance of submission, he meant it only metaphorically. “I never saw anything like that in our house,” he told me. “He didn’t tie the ladies up to the bedpost. He’d never have gotten away with it.”)
In London, they deliver Maru's notebook to the Supreme War Council, where Sir Patrick Morgan is trying to negotiate an armistice with Germany. Diana translates Maru's notes and reveals that the Germans plan to release the deadly gas at the Western Front. Although forbidden by his commander to act, Steve, with secret funding from Morgan, recruits spy Sameer, marksman Charlie, and smuggler Chief Napi to help prevent the gas from being released. The team reaches the front in Belgium. Diana goes alone through No Man's Land and captures the enemy trench, allowing the Allied forces to help her liberate the village of Veld. The team briefly celebrates, taking a photograph in the village, while Diana and Steve begin to develop their own romance.
Unfortunately, not long after Diana left, Hera came for her vengeance, and though she could not bring herself to kill Hippolyta, she could not forgive her either. Feeling regret at giving up the only real family she had, Wonder Woman returned to Themyscira to find the Amazons absent, and her mother turned to stone. Shortly after, Wonder Woman encountered Lennox, a man who claimed to be another of Zeus' bastard children. After learning that Zeus has gone missing, they confronted the Gods of Olympus, Poseidon and Hades, in order to prevent them from taking over Zeus’ throne. To prevent a war between gods, Diana proposed that the two brothers share Heaven with one ruling during the day, and the other at night. Hera angrily interceded, which was what Diana had planned, and using Hermes' staff she transported herself to Mount Olympus to face Hera alone. She warned that she would make Hera regret what she had done to her mother before returning to Earth. Unfortunately, by the time she had returned, Hades had kidnapped Zola with the warning that Diana would need to make good on her bargain or Zola and her child would die.