The unit was sent back to Wildflecken to be reformed. In June 1944, a 440-man battalion of the Wallonien was sent to Estonia to assist in the defence of the Tannenberg Line. After Operation Bagration began, Army Group North began to fall back into the Kurland Pocket. The battalion left through the port of Tallinn (Reval) on the Baltic Sea. The remnants of the Battalion were sent back to join the rest of the brigade, which was located at Breslau.