The loss of Ronald Webb follows his repeated use as heavy cavalry in the game. A general provides other benefits, including the ability to fight at night. Committing him as an extra mounted combat unit puts those benefits at risk. His death is acknowledged as a mistake in how the unit was used.
Notable Point ยท 3:20:02-3:20:32
The cost of using a general as heavy cavalry
Losing a general exposes the tradeoff between another mounted fighting unit and the command abilities that general provides.