Complex sentence: After their 1933 success, the Diehards didn't win another NWFU premierships for 36 years, they began building a strong team in the 1960's, highlighted by the fact that every Wander Medal between 1964 and 1971 was won by a Latrobe player.
Split into simpler sentences: After their 1933 success, the Diehards didn't win another NWFU premierships for 36 years. They began building a strong team in the 1960s, highlighted by the fact that every Wander Medal between 1964 and 1971 was won by a Latrobe player.