Hi Lloyd!
You already made a great video about military deception through which one side tries to get the other side to do what the first side wants to do. But there's also the big propaganda game both in war and peace. Even when I was still in primary school I heard of ancient stories like a Spartan warrior at Thermopylae who painted a fly on his shield because he would be so close to his enemies that it would appear to them as big as a lion (I don't consider the painted fly propaganda but the history in which this was written down - so that future Persians who think about another invasion could hear about this) and of course this continues up to the present.
yours
Xander