It was controversial due to charges of American imperialism, Cold War politics, the involvement of Cuba, the unstable state of the Grenadian government, the illegality under international law and Grenada's status as a Commonwealth realm.
On October 25, 1983, Delta Force, 1st Ranger Battalion and 2nd Ranger Battalion invaded Grenada to protect American citizens and assist in restoring order to the island nation.
A great portion of the forces had to unexpectedly jump into the combat zone while the rest were inserted by fast roping out of Blackhawk helicopters.
The mission was a success though highly criticized by other nations including Canada, Russia and Britain.