If this interests you, look at the number of casualties in the days after d-day. D-day itself gets commemorated not because it was the highest amount of casual

If this interests you, look at the number of casualties in the days after d-day. D-day itself gets commemorated not because it was the highest amount of casualties but because it signified both the resolve of the allied world and the strength of our non-commissioned and junior officers to take charge and lead despite complete chaos. D-day was a massive undertaking so large and risky that just training for it risked enormous casualties (as outlined by the article - the incident mentioned isn’t a secret it has been well documented for a long time). Therefore it was with tremendous risk to execute and the fact that the casualty count wasn’t catastrophic is a testimony to the men on the beach. Another great series is band of brothers which shows how these men self organized and led each other despite not having a predefined blueprint for every scenario. Something we could all learn from - how many of our teams run this way versus needing constant commanding from ‘generals’ and blueprints for every scenario?