Simplify the following text for a Grade 10 native English-speaking person.
Original: Three years later , in South Africa during the Second Boer War , Baden-Powell was besieged in the small town of Mafeking by a much larger Boer army ( the Siege of Mafeking ) .
Simplified: Three years later during the Second Boer War , Baden-Powell was besieged in the small town of Mafeking by a much larger Boer army ( the Siege of Mafeking ) .