At the battle of Sportsylvania Court House 155 years ago, action was heating up following five days of rain. May 18 saw a Federal assault as large in scale as the May 12 assault again the Mule Shoe, foiled by superior Confederate engineering. May 19 saw the Confederates bring the fight to Federals at Harris Farm.
Here are some pieces from the ECW archives about those episodes:
May 18: Engineering Over Infantry
May 19: Remembering Harris Farm