The last prototype of the latest Challenger 3 tank has rolled off the assembly line in Britain. It will be the most powerful combat vehicle in the history of the British Army, states British Defense Secretary Grant Shapps. “This is the first fully British-built tank in 22 years – the Challenger 3. Cutting-edge upgrades are now underway in Telford to make this the most lethal tank in British Army history – giving our soldiers the firepower they need to defend Britain,” Shapps wrote on his X (Twitter). This is the first fully British built tank in 22 years – the Challenger 3 Cutting-edge upgrade…