From what I've seen, you have way to many Troops in the battle, not sure but, it was less than 200 quartered at the post. In one scene only I counted 74 soldiers,
The opening scene says "Inspired by The Battle of Rorke's Drift". It's a video game, not a historical battle. I like it when there are a lot of troops fighting, and it makes for a more entertaining video.
That entire situation was so funny. I knew the Zulu would try to enter the house so I placed the mine at the entrance. If you look closely you can see that the mine area (in red) is bearly touching the house. When it exploded, it blew up the house, lol. Brits couldn't fire from it anymore & took heavy casualties. But in the end, it makes for a good video :)