Wonder Woman’s powers are a result of the blessings she received from the gods (or presumably in the modern version by her divine ancestry), but originally came from her "brain energy" training. Her abilities in large part come from her upbringing in the martial society of the Amazons. She is one of the most powerful superheroes in the DC universe.
In an October 25, 1940, interview with the Family Circle magazine, William Moulton Marston discussed the unfulfilled potential of the comic book medium. This article caught the attention of comics publisher Max Gaines, who hired Marston as an educational consultant for National Periodicals and All-American Publications, two of the companies that would merge to form DC Comics. At that time, Marston wanted to create his own new superhero; Marston's wife and fellow psychologist Elizabeth suggested to him that it should be a woman:
Wonder Woman is trained in the a variety of martial arts, making her a master of unarmed and armed combat (even proving adept with pistols). Before Flashpoint Batman considered Diana the best melee fighter on the planet, even putting her ahead of Superman, due to the combination of her power and the depth of her training. Even when depowered, she is on par with some of the best hand-to-hand combatants in the DC Universe.
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.
Impressed by this unknown woman's self-sacrifice, the Amazons entombed her with honors and clothed her in armor displaying the American flag pattern on her uniform, which they assumed were her heraldic colors. Trevor's legacy was also the primary reason why Ares arranged for Steve Trevor to bomb the island, as he could not resist the irony of the heroine's son unwittingly killing her admirers.