Final answer:
The traditional tune popularized by guerrilla soldiers during World War II is The Partisan Song.
Step-by-step explanation:
The traditional tune popularized by guerrilla soldiers during World War II is The Partisan Song. This song, also known as 'The Song of the Partisans,' became a symbol of resistance and defiance against occupying forces. It was sung by partisan fighters from countries such as Poland, France, and Yugoslavia to inspire unity and courage in their fight against Nazi Germany.