Complex sentence: She was rearmed with the 240-millimeter M/76 guns in 1881, her original Dahlgren guns became part of the Ericsson monument at Filipstad, and she was reactivated in 1882 and 1883, but only sporadically thereafter.
Split into simpler sentences: She was rearmed with the 240-millimeter M/76 guns in 1881 and her original Dahlgren guns became part of the Ericsson monument at Filipstad. The ship was reactivated in 1882 and 1883, but only sporadically thereafter.