George C. Brodrick,
The Political History of England - Vol XI
“ No one else saw beforehand, what Napoleon discovered too late, that a war in Portugal and Spain would drain the life-blood of his invincible hosts, and at length help towards the invasion of France itself. No other general would have shown equal statesmanship in managing Spanish juntas and controlling even Spanish guerillas, or equal forbearance in sparing the French people the evils which a victorious army might have inflicted upon them. ”

