The charge against Russian forces was part of the Battle of Balaclava, a conflict making up a much larger series of events known as the Crimean War. The order for the cavalry charge proved catastrophic for the British cavalrymen: a disastrous mistake riddled with misinformation and miscommunication. The calamitous charge was to be remembered for both its bravery and tragedy.
https://www.historic-uk.com/HistoryUK/HistoryofBritain/Charge-Of-The-Light-Brigade/