Stannis’ speech is more economical than Tyrion : “Come with me and take this city”.
Now that’s a mark of a true leader, he’s the first off the boat storming the beach. The problem is, most of his men were Renly’s supporters, fighting for him under duress, so not very surprising they started bailing when it looks like they were going to be defeated. And with his most trusted man Davos out of commission (surely Davos is not dead??), Stannis is pretty much on his own. Hmmm, maybe leaving Melisandre is not such a good idea after all, heh.