Final answer:
The 'glamour squad' refers to the Royal Air Force (RAF) pilots who valiantly defended the UK during the Battle of Britain in World War II, using radar technology and exemplary piloting to prevent a German invasion.
Step-by-step explanation:
The British small group that exerted herculean efforts during Germany's attack in World War II was the Royal Air Force (RAF). During the Battle of Britain, the RAF played a crucial role in defending the United Kingdom against the German Luftwaffe's assault. A significant technological advancement that assisted them was the usage of radar, which helped provide early warning of incoming attacks. This, combined with the bravery and skill of the RAF pilots, including volunteers from various countries, was instrumental in preventing a German invasion and preserving Britain's freedom.
The term "glamour squad" does not refer to an official military unit but might colloquially refer to this valiant group of RAF pilots who became celebrated for their crucial defense against the German attacks. Their determination and success marked a turning point in World War II, contributing to the eventual defeat of Germany.