Final answer:
Leon Trotsky was the Russian socialist revolutionary known for arousing patriotism through his oratory skills but was less effective in governmental leadership compared to Stalin, who later took control of the Soviet Union.
Step-by-step explanation:
The Russian socialist revolutionary who used his commanding oratory to arouse patriotism but lacked the political skills needed to fashion an effective wartime government was Leon Trotsky. While Trotsky was a brilliant orator and a significant leader during the Russian Revolution alongside Lenin, it was ultimately Stalin who emerged as the leader after Lenin. Despite Trotsky's role in organizing and leading the Red Army, his theoretical insights, and his powerful public speeches, he was eventually outmaneuvered by Stalin who consolidated power and would lead the Soviet Union into the future.