Complex sentence: Hertzog Hall (built 1855--1856) became a dominant feature on the hill, which became known locally as "Holy Hill", where during the Revolution was the site of a British artillery redoubt during the occupation of New Brunswick.
Split into simpler sentences: Hertzog Hall (built 1855--1856) became a dominant feature on the hill, which became known locally as "Holy Hill". During the Revolution was the site of a British artillery redoubt during the occupation of New Brunswick.