Which World War II product innovation was initially marketed to military leadership as 'Victory Fog' before becoming a standard infantry item?

Throughout history, military product innovations have dramatically shifted the balance of power and transformed warfare. Some developments were revolutionary when introduced, while others evolved gradually. This trivia question focuses on a significant product innovation from World War II that had lasting impacts on military and civilian technology development. Test your knowledge of how product development influenced military history!

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

M1 Aerosol Insect Repellent (DEET)
K-Rations packaged meals
Portable field radio (SCR-300)
Synthetic rubber combat boots