Final answer:
In September 2012, Taliban insurgents attacked Camp Bastion, a British-run NATO base in Afghanistan, resulting in two U.S. Marine casualties and damage to aircraft.
Step-by-step explanation:
The incident that occurred at Camp Bastion in September 2012 was a significant attack on a coalition military base during the Afghanistan war. On September 14, 2012, Camp Bastion, a British-run NATO base in Helmand Province that housed U.S. Marines, came under attack by Taliban insurgents.
The well-planned assault resulted in the deaths of two U.S. Marines and the destruction or damage of multiple aircraft.
This event highlighted the ongoing challenges faced by coalition forces in Afghanistan and the capability of the Taliban to carry out sophisticated operations.