Cost to complete early: 14 candies
- Fact 1: The earliest known combat helmets were made from leather and bone; examples dating back over 25,000 years have been found in Sumerian excavations.
- Fact 2: Steel combat helmets became common around the 10th century, and remained in wide use until the rise of rifled firearms in the 17th century.
- Fact 3: Modern combat helmets are made from high-density plastics and high-tech ballistic metials such as Kevlar, and feature computerized aids like cameras and night-vision goggles.
- Fact 4: Archaeologists studying 17th-century BC Mycenaean sites have discovered leather helmets covered in scales made from boar tusk ivory, making them fairly light and flexible.
- Fact 5: The Adrian helmet, used by French forces during WWI, was the first modern steel helmet. It offered little protection against bullets, but significantly reduced shrapnel casualties.