“An important factor enabling the Soviets to seize the offensive and retain it is Lend-Lease. Lend-Lease food and transport particularly have been vital factors in Soviet success. Combat aircraft, upon which the Soviet Air Forces relied so greatly, have been furnished in relatively great numbers (11,300 combat planes received). Should there be a full stoppage it is extremely doubtful whether Russia could retain efficiently her all-out offensive capabilities. Even defensively the supply of Lend-Lease food and transport would play an extremely vital role. It amounts to about a million tons a year. If Russia were deprived of it, Germany could probably still defeat the U.S.S.R. Lend-Lease is our trump card in dealing with U.S.S.R. and its control is possibly the most effective means we have to keep the Soviets on the offensive in connection with the second front.” – General George C. Marshall, from a memorandum to President Franklin D. Roosevelt, March 31, 1944