Most favored, equally, Battles of:
Prairie Grove
Honey Springs
Fort DeRussey
Palmitto Ranch
Sabine Pass
Dove Creek
Mansfield
Pleasant Hill
Other battles that intrigue me, but can't be called a favored area of study, perhaps secondary favored battles
Nashville
Fort McAllister
Valverde
Kennesaw Mountain
Plymouth
Cherbourg
Siege of Petersburg
Mobile Bay
And here's two I like to study, whenever I can find information on them, and is extremely hard to find, as a test for the knowledge of everyone who'll bite. One should be easy for many, the other not so much, but the first is a hint to the second.
1. The Great Raid on Austin
2. the "Siege" of Matehuala
I just gotta throw those two out for fun to see what happens, I can't help myself.