So after a few days I thought it would be interesting to add the additional choices and others and note where we were to date. I ordered these based on the un-weighted choices and the order would change a bit using the weighted (3 for 1st, 2 for 2nd 1 for 3rd) version. Nonetheless, when you add the additional choices the order surprised me somewhat. Reading from left, the numbers represent: number of 1sts, 2nds, 3rds, sum and weighted sum.
American Civil War 5, 1, 6, 0, 17
Reconquista: Spain vs. the Moors, Charlemagne, El Cid 1, 3, 1, 5, 10
Boxer Rebellion 4, 0, 0, 4, 12
Anglo Zulu War 3, 1, 0, 4 11
French and Indian Wars 3, 0, 1, 4, 10
Ancient Roman: Gallic, Britain, Parthian, Roman Civil Wars 2, 1, 1, 4, 9
WW I 2, 1, 0, 3, 8
Crusades 2, 1, 0, 3, 8
Lewis / Clark 2, 0, 1, 3, 8
Macedonian / Trojan 1, 2, 0, 3, 7
Mongolian Conquests 2, 0, 1, 3, 7
Alexander's Conquests 2, 0, 0, 2, 6
Ancient Rome: Punic, Macedonian 2, 0, 0, 2, 6
American Revolutionary War 2, 0, 0, 2, 6
Thirty Years War: Musketeers etc 1, 1, 2, 5
Sudan 1, 0, 0, 1, 2, 5
Hundred Years War 1, 0, 0, 1, 3
Franco Prussian 1870 1, 0, 0, 1, 3
Korea 1, 0, 0, 1, 3
Starship Troopers 1, 0, 0, 1, 3
Boer War 0, 1, 0, 1, 2
Early Britain: Saxon, Viking, Britains 1, 1, 2
Apache 1870 0, 1, 1, 2
Seminole Wars 0, 0, 2, 2, 2
The numbers pretty much speak for themselves. I was more than a little surprised to see that the Spanish / Moorish Wars did so well (2nd un-weighted, 5th weighted). If the two Roman periods were added they would have been 2nd.