When Jesus was speaking of "the END", it was a reference to what the natural Jews thought "the end" was, which was the end of their current "system of things" which was rule by gentiles. So the "end" is a reference to the "end of the gentile times" which ended on November 30, 1947 when the Jews officially came out of exile.
So if a generation of 1914 was from 1914-1994, then the end came within that time in 1947.
When the bible says the "good news" would be preached worldwide just before the end came, it is a reference to the tiny group of Christians that started out in the mid 1800's becoming an international organization by the time the Jews came out of exile, that is, in 1947. This meant the "good news" would have become worldwide within Christendom by that time, which it had. But also there is a direct fulfillment. Check this out:
Kingdom Proclamation Surges Ahead With a view to worldwide expansion, on February 6, 1947, the Society’s president and his secretary, Milton G. Henschel, embarked on a 47,795-mile [76,916 km] world service tour. The trip took them to islands of the Pacific, New Zealand, Australia, Southeast Asia, India, the Middle East, the Mediterranean area, Central and Western Europe, Scandinavia, England, and Newfoundland. It was the first time since 1933 that representatives of the Society’s headquarters staff in Brooklyn had been able to visit their brothers in Germany. Jehovah’s Witnesses around the world followed the two travelers as reports of the trip were published in issues of The Watchtower throughout 1947.
(Proclaimers, p. 98)
Therefore, Knorr's worldwide lecture tour literally fulfilled the "good news" being preached world wide just before the "end" occurred on November 30, 1947.
Having the right interpretation is everything, so:
1. The "great tribulation" of Matthew is not Armageddon but the Holocaust. This is different from the "great tribulation" that occurs in connection with Armageddon. Matthew 24:29 clearly says this tribulation is OVER before the 2nd coming.. i.e. "Immediate after the tribulation of those days..."
2. The "end" of the system of things Jesus was talking about to the Jews was the end of the gentile times, which ended in 1947. It was not a reference to Armageddon. By 1947, the WTS had preached the "good news" around the globe within the world of Christendom, with NH Knorr literally preaching the the "good news" earlier that year in a worldwide speaking tour. So the prophecy about the "end" coming after the good news was preached was literally fulfilled.
I know it is hard to separate what the WTS teaches and what the Bible actually teaches. But the light is available now for those who want to understand the Bible. For those paying attention and for those who are honest and still seeking answers.