Men use shovels and pick axes to dig trenches.

The video discusses the preparations in London during wartime, including digging trenches in parks and piling sandbags against windows to protect against anticipated enemy air raids.

What preparations are being made in the parks of London?

What is the purpose of piling sandbags against ground floor windows?

What kind of events are anticipated that would require these preparations?

How do the air raids affect the residents of London?

What emotions or reactions might people have in response to the threat of air raids?