Original sentence: On May 23 the division went on the offensive, crossing the Tiber River by June 4, outflanking Rome.The 45th Infantry Division was mostly stuck in its place as the Pimlott Line was bombarded with aircraft and artillery fire
Edited sentence: On May 23 the division went on the offensive, crossing the Tiber River by June 4, and in the process outflanked Rome.The 45th Infantry Division was mostly stuck in its place as the Pimlott Line was subjected to bombardment from aircraft and artillery fire