Complex sentence: On April 27,1944, the unit was released from the Wehrmacht and Rebane was reluctantly drafted into the newly formed 20th (Estonian) Division of the Waffen-SS, eventually becoming colonel of the 47th Waffen-Grenadier Regiment.
Split into simpler sentences: On April 27,1944, the unit was released from the Wehrmacht. Rebane, after initially refusing, was forced to join the newly formed 20th (Estonian) Division of the Waffen-SS, eventually becoming colonel of the 47th Waffen-Grenadier Regiment.