I've always wondered if some of the errors made in battles were the faults of orderlies screwing up their messages.
Thought that's a pertinent point raised, generally speaking.
Can recall reading Civil War instances where a commander's verbally issued field orders were conveyed via orderlies/couriers during the heat and chaos of battle, and somehow the intended message got misinterpreted or misunderstood by receiving subordinates, with detrimental effects. But were any misinterpretations/misunderstandings of such carried directions more often than not, the fault of the person charged with transmitting it?
It's not difficult to comprehend that the content of verbal directions relayed via intermediaries (like orderlies and couriers) on the battlefield could get transmitted incorrectly. While it seems less plausible that the entire gist of the message was communicated wrongly, it's certainly more believable that particular words, or even phrases, within the intended communication got erroneously used/substituted, or were omitted, in the announcement to the targeted receiver. It was not just the content, but the paraverbals (e.g. voice tone) of the spoken message, that could be important too. Perhaps an excited or exhausted messenger's voice tone, which emphasized the wrong parts in reiterated instructions, might have influenced a receiver to misinterpret or misunderstand the order originator's intention in the message – that is, it's just not what you say, but how you say it, that matters.
Undoubtedly, there would have been improperly conveyed verbal orders that occurred in battle which had a material effect on troop unit movements and cost consequential unnecessary casualties.
The risks of distortion occurring in issued verbal orders were increased where third parties (other than senders and receivers) were involved to carry the communications. These risks would have been magnified further when the communication was conveyed in the turmoil and pressures of battlefield conditions.
But in many instances it might be unfair, as well as difficult, to apportion too much of the blame on the orderlies/couriers who relayed these verbal messages, where a commander's intentions were later found to have been improperly followed. Thought that often the issuer and/or receiver of the message must bear some responsibility - either by not making their intentions clear enough in the direction or for their own misinterpretations of what was meant by the direction transmitted. In this regard, am reminded of the frequent use of the words 'if practicable' found in written directions, that was sometimes subject to misinterpretation/misunderstanding during the war. Was the issuer or the receiver to blame in these circumstances?
Maybe someone could dig up some blatant examples of where messengers wrongly relayed commander's verbal orders to subordinates, which had material adverse consequences.