1945

February

 * 11 February: Starfleet officers Scott Fack, Anne Cobry, Antonio Ramirez and an away team from the stranded-in-the-past Dark Starship beam down to Earth near Dresden, Germany to investigate a compatible power source. Once there, they discover the early stages of an alien invasion taking place.
 * 13 to 15 February: The  firebombed Dresden, killing tens of thousands of people.  Unbeknownst to many, Starfleet officers Scott Fack, Anne Cobry and Antonio Ramirez successfully stop an alien invasion by luring the aliens into Dresden during the bombing, incinerating all the aliens and restoring the timeline.

May

 * 8 May: Germany surrenders, ending the European part of World War II.

June

 * From the aftermath of World War II, the United Nations is formed.

August

 * 6 and 9 August: The United States of America drops nuclear weapons on and, Japan.  It is the first time a nuclear weapon is used on Earth as a.
 * 15 August: Japan surrenders, ending World War II.