Another battalion deployed to Alaska to help build the Alcan Highway and participate in the invasion of Okinawa, and another was posted to Asia to help construct the Burma Road. The remaining components of the 45th Division were sent to Sicily in 1943, where they fought in the campaigns of Naples-Foggia, Rome-Arno, Southern France, Rhineland, and Central Europe.
The deployment of a battalion to Alaska for highway construction and participation in the Okinawa invasion, as well as another to Asia for the Burma Road project, both involved the same military unit (the 45th Division). The remaining components of this division were then sent to Sicily in 1943 to fight in various campaigns across Europe and Italy.