 On dispatching Grummond and the cavalry to join Fetterman, Carrington explicitly ordered him to stay with Fetterman during the operation.Yet, at some point, Grummond led his cavalry far in advance of Fetterman, chasing the Indian decoys in direct violation of his orders.He had a distinguished Civil War record as a combat officer, but he had been court-martialed for drunkenness and abuse of civilians and was known as a bigamist.