Answer:
Yes a document by a British soldier is trustworthy. This is a firsthand account, meaning that it was written by a person who actually experienced the event which they are writing/talking about.
Yes...?
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"The Great Schism of 1054" / "East to West Schism" was the final speration of the eastern and western churches. (Protestant vs. Catholic) People broke away from the Catholic church for the first time NOT afraid of consequence.
In August of 1963, representatives of the United States, Soviet Union, and Great Britain all signed the "Limited Nuclear Test Ban Treaty." This treaty limited/prohibited the testing of nuclear weapons in outer space, underwater, or anywhere in the atmosphere.