Original sentence: In the Saar Offensive in September, the French attacked Germany with the intention of assisting Poland, but it fizzled out within days and they withdrew.These included opening an Anglo-French front in the Balkans, invading Norway to seize control of Germany's main source of iron ore and a strike against the Soviet Union, to cut off its supply of oil to Germany
Edited sentence: In the Saar Offensive in September 1939, a minor French force attacked Germany with the intention of assisting Poland, but it fizzled out within days and they withdrew.These included opening an Anglo-French front in the Balkans, invading Norway to seize control of Germany's main source of iron ore and, more bizarrely, a strike against the Soviet Union, to cut off its supply of oil to Germany