Jim
it does not sound like friendly fire based on the account below.
Marines In World War II - Bougainville And The Northern Solomons ...
By Major John N. Rentz USMCR
"he advanced toward the gun position alone, being hit several times on the way. Owens continued his assault nevertheless, entered the gun position through the fire port, killed some of the gun crew and drove the remainder through the rear door, where they were instantly shot. His charge carried him just clear of the emplacement where he fell dead of the wounds he had received."
He is no fool who gives what he cannot keep to gain that which he cannot lose
There are no great men, only great challenges that ordinary men are forced by circumstances to meet.