Simplify the following text for a Grade 8 native English-speaking person.
Original: Rainfall from the typhoon breached a flood-retaining wall at a United States Marine Corps training camp in the Kanagawa Prefecture of Japan , leading to a fire which killed 13 Marines and injured 68 .
Simplified: Rainfall from the storm breached a wall that was used to stop flooding at a United States Marine Corps training camp in the Kanagawa Prefecture of Japan . This eventually led to a fire which killed 13 Marines and hurt 68 .