Complex sentence: In July 2017 the 24-acre island was acquired for preservation by the Civil War Trust aided by a grant from the National Park Service, the first grant in the United States made for a War of 1812 site under its battlefield grants program.
Split into simpler sentences: In July 2017 the 24-acre island was acquired for preservation by the Civil War Trust, aided by a grant from the National Park Service. This was the first grant in the United States made for a War of 1812 site under the NPS battlefield grants program.