A truck bomb hit the Marine barracks on October 23, 1983. A driver steered a truck loaded with explosives through the gates and into the building, and the blast collapsed the structure and killed 241 Americans, most of them still in their bunks. It was a Sunday morning.
The Marines were in Lebanon as peacekeepers. They were part of a multinational force sent after the Israeli invasion of 1982, meant to stand between the warring factions, and they had become a target as the mission blurred into the civil war. The warnings had been there.
A second bomb hit the French. Within minutes another truck exploded at the French paratroopers' barracks, killing 58, and the two attacks together stunned the world. No one immediately claimed them, but they were later linked to groups backed by Iran.
The mission began to unravel. The Americans fortified their positions and then, within months, withdrew from Lebanon entirely, and the other nations followed. The peacekeeping force that had come to stabilize the country left it to its war.
The bombing changed American policy. It showed how exposed a force could be in a war it did not understand, and it made military planners wary of open-ended missions. The men killed that morning became a caution that shaped American strategy for years.