Simplify the following text for a Grade 8 native English-speaking person.
Original: Hoboken became the major point of embarkation and more than three million soldiers , known as `` doughboys '' , passed through the city . Their hope for an early return led to General Pershing 's slogan , `` Heaven , Hell or Hoboken ... by Christmas . ''
Simplified: More than three million soldiers went through the terminal , and their word phrase was `` Heaven , Hell or Hoboken ... by Christmas . ''