His appeal for pots and pans "to make Spitfires" was afterwards revealed by his son Sir Max Aitken to have been nothing more than a propaganda exercise. Still, a Time Magazine cover story declared, "Even if Britain goes down this fall, it will not be Lord Beaverbrook's fault. If she holds out, it will be his triumph. This war is a war of machines. It will be won on the assembly line." Under Beaverbrook, fighter and bomber production increased so much so that Churchill declared: "His personal force and genius made this Aitken's finest hour." Beaverbrook's impact on wartime production has been much debated but he certainly energised production at a time when it was desperately needed. The Royal Marine General Leslie Hollis who worked as the Senior Assistant Secretary to the War Cabinet recalled in an interview: "For all Beaverbrook's tremendous achievement in producing aeroplanes, there was little to praise in the way he rode roughshod over everyone. He never carried an oil can. He did as he liked, when he liked. He once promoted an Air Commodore to Air Vice-Marshal-over the heads of fifty more senior Air Commodores. This sort of behavior did not make for happiness, but it was the way he worked, and the end justified the means". Hollis stated that for Beaverbrook all that mattered was if someone was efficient or not, and he was very ruthless about sacking those he viewed as inefficient. However, it has been argued that aircraft production was already rising when Beaverbrook took charge and that he was fortunate to inherit a system which was just beginning to bear fruit. Air Chief Marshal Lord Dowding, Head of Fighter Command during the Battle of Britain wrote that "We had the organization, we had the men, we had the spirit which could bring us victory in the air but we had not the supply of machines necessary to withstand the drain of continuous battle. Lord Beaverbrook gave us those machines, and I do not believe that I exaggerate when I say that no other man in England could have done so." Hollis recalled in an interview: "Beaverbrook's ruthless, cut-throat, steam-roller approach to every problem made him feared as well as respected. You either got on with him or you did not; and in the latter case it was better and safer to give him a wide berth. Nevertheless, he was a staunch