Brakh’s an archer by trade, but it’s not like he’s completely helpless with a sword and board, as evidenced by this screenie. Especially when that board has spikes on it.
Now, I wasn’t aware Orcs used actual boards as shields, but I imagine it would be fun to carve messages in the wood like “CAUTION: ORC” and “YOU SHALL NOT PASS” and “ELISIF + ULFRIC” with a little heart around it. I would just put some words in very small print, maybe an eye chart, something your foes have to squint to read and it’s only then they realize it says “LOOK OUT!” but at this point the warning is just a courtesy because they’re already dead.
When you have nothing but a knife, some wood, and free time, these are the things you do.