Complex sentence: He was then taken to Stalag VA, then to Stalag VC and eventually to Stalag VB in Villigen where he found his younger brother Jan (ek) Urbański.
Split into simpler sentences: He was then taken to Stalag VA, then to Stalag VC and eventually to Stalag VB in Villigen. Where he found his younger brother Jan (ek) Urbański.