Complex sentence: A Bronze Memorial Plaque was mounted on the wall of the Oberlin, Louisiana courthouse in memory of Sgt. Leroy Johnson who was from Oakdale, just a few miles north of Oberlin in Allen Parish.
Split into simpler sentences: A bronze memorial plaque in his honor was mounted on the wall of the Oberlin, Louisiana, courthouse. Johnson was from Oakdale, just a few miles north of Oberlin in Allen Parish.