I don't think that a kill list per unit would be needed, as already explained by Dell19. At least later in the game and / or on bigger maps (which make for more units, generally) you wouldn't look to individual units' kill lists anymore.
I like the reanimation of the total casualties list, though.
This could be used for scoring and MGL creation, as well.
Let me explain:
Nation A (with current casualties of 50) is at war with nation B (current casualties of 100). A's military counts for 100 units, B's military counts for 75 units. That means, that B's unit/kill ratio is much worse than A's one.
In real life, this would mean that B's military is less experienced/trained than A's.
Now, if an elite unit of B would kill a unit of A, there could be a higher chance of creating an MGL! Why? Because you could say that if a less experienced unit (although on the same level) kills another one, this has to be due to it's individual commander's skills.
This way, even weaker nations (in regards to above stated unit/kill ratio) would have a chance to measure up with the "stronger" one.
Furthermore, the military score could be calculated based on the units/lost units/killed units ratio.
So, the player would have an incentive to make good military manouvres, instead of just playing around.
Comments?