It was a part of the ad-hoc Panzerverband Strachwitz under Hyacinth Graf Strachwitz von Groß-Zauche und Camminetz.[4] The 101st, along with the SS Panzer Brigade Gross, participated in Operation Doppelkopf to restore connection between Army Group North and Army Group Center.[4] It was then deployed to the frontline on Estonia.[5] On October 1944, the brigade was reformed near Bobruisk, then it was merged with the remains of the destroyed 20th Panzer Division.[2] The brigade staff formed the Staff/21st Panzer Regiment, the panzer battalion became the 2/21st Panzer Regiment, while the panzergrenadier Battalion became a Jagd-Kommando in the 20th Panzer Division.[2]