Pretty poor to be honest, firstly the film is set on D Day and the weather is a very sunny day, D Day itself wasn’t an ideal day for making an invasion from the sea. I’m no military tactician at all but I’m sure that battle is more intense than this. At one point they call in naval gun support, one shell hits an enemy lorry and the full impact takes out the engine and nothing else. I’d give it a miss if I was you. It’s literally not worth it.