During the years as CIGS, Brooke had a stormy relationship with Winston Churchill. Brooke was often frustrated with the Prime Minister's habits and working methods, his abuse of generals and constant meddling in strategic matters. At the same time Brooke greatly admired Churchill for the way he inspired the Allied cause and for the way he bore the heavy burden of war leadership. In one typical passage in Brooke's war diaries Churchill is described as a "genius mixed with an astonishing lack of vision – he is quite the most difficult man to work with that I have ever struck but I should not have missed the chance of working with him for anything on earth!"