- Have been searching for years about info on the 643rd TDB. My father didn't want to talk much about his recon unit was badly torn up on April 12 at Barby, Germany prior to the taking of the Elbe river.5 Men were killed and a number were wounded. My Father was among the wounded and he sorely saddened about losing so many of his buddies during the remainder of his life.His name was Bill Francis and was on the M-8 Armored car serving in the Recon unit.