Harry S. Truman was the 34th President of the United States. He was previously the Vice President of Franklin D. Roosevelt and became the President after Roosevelt's death in 1945. Truman lead the United States through the post-World War II years and the interwar years before Operation Humpback Whale. Just like his predecessors, he did not prepare the appropriate defenses of the United States for a future war with Nazi Germany. Truman was defeated by Thomas E. Dewey in the 1948 elections. His successor followed the same mistake of not preparing the United States military for a possible war with the Axis Powers.
In our timeline, newspapers declared Thomas Dewey the winner of the 1948 Presidential Elections. Truman would later lead the United States during the Korean War of 1950-1953 and place containment policies of communism in Europe and Asia.