Davef68
I'm afraid the very thought of FRES makes me twitch. When we got the URD in April 2002, showing an In Service Date commencing 2007, we were quietly told to completely ignore this, and assume it wouldn't be met by over a decade. That early version of the URD didn't really break it down the way you do. It stated the main vehicles we'd need until 2025 would be Challenger 2 and Warrior, so wheeled was rather ignored at that time. Regarding batteries, the issue was providing charging in the back of Warrior, but we were aware the FRES contractor at the time was looking at hybrid drives. On MBT, the main concern was the tank telephone cable was cut every time they slotted a new engine in!