As someone born and raised in the western US, I think of "western front" as WWI, not the westward expansion of the US. There are different terms for that. The

As someone born and raised in the western US, I think of "western front" as WWI, not the westward expansion of the US. There are different terms for that. The famous book refers to WWI: https://en.wikipedia.org/wiki/All_Quiet_on_the_Western_Front https://en.wikipedia.org/wiki/All_Quiet_on_the_Western_Front