WWI Vets Meet to Discuss WWII Problems

The American Legion convention, known for its humor, shifts focus during the war year. Veterans of World War I discuss World War II efforts, emphasizing the importance of labor in supporting the war. A new national commander is elected, and Secretary of the Navy Frank Knox addresses the convention, highlighting the ongoing battle against German submarines and the need for unity among nations to ensure victory.

What did Secretary of the Navy Frank Knox say about the German submarines?

What is the significance of the phrase 'United Nations' in the context of the speech?