Complex sentence: Effective April 5,1944, the 3547th Service Unit replaced the WAC and medical section of the 1560th Service Unit, and on August 18, the hospital received its first casualties from England and France.
Split into simpler sentences: Effective April 5,1944, the 3547th Service Unit replaced the WAC and medical section of the 1560th Service Unit. On August 18, the hospital received its first casualties from England and France.