I have that book, it's very interesting. Although T 34 (r) Beutepanzers did fight on the frontline - notably with Das Reich and GD, many captured tanks were used as mopping up vehicles, as they were sometimes fired upon by friendly forces due to their unique silhouttes. The term "pursuit tank" would be a way to describe these operations. As you probably know, many tanks, especially light or obsolete ones, were destined for second-line units, anti-partisan operations and airfield and garrison patrols. Many were also converted to tractors, SPGs, etc. Some were used as pillboxes or target practice.