St John Ambulance is a group of people who help others when they have gotten hurt or feel sick. They do this by giving medical attention and care to people who need it.
Think of them like superheroes with first aid kits instead of capes. They are always ready to help whenever someone needs them, just like Superman or Wonder Woman.
They have special training and know exactly what to do when someone is hurt or not feeling well. They can bandage up cuts, help someone who has fallen, and even give medicine to people who need it.
St John Ambulance is named after a man named John, who lived many years ago and helped people who were sick or hurt. Today, their mission is to continue what John started by helping people in need and making the world a safer place for all of us.