Complex sentence: Shortly after the Marshall Mission failed, Truman sent another representative to China, General Albert Wedemeyer, who had commanded U.S. troops in China in WW2, on a fact finding mission to establish the state of both groups.
Split into simpler sentences: Shortly after the Marshall Mission failed, Truman sent another representative to China, General Albert Wedemeyer, who had commanded U.S. troops in China in WW2. Wedemeyer was on a fact finding mission to establish the state of both groups.