Wonder Woman in Hollywood - S1-E14
Other mistake: When Wonder Woman and Wonder Girl are at Bremer's estate to find Steve and Jim, Wonder Girl's lasso hangs either on the left side of her belt or on the right side, depending on the angle of the shot.
Answer: Yes, on the first episode of season 2, she is shown on the island, when another plane crash lands, she says, "They sound different from WW II". Later in the same episode a woman gathers background information on Wonder Woman. The woman says, "From 1942 to 1945, she helped the Allies win the war."