Counterinsurgency (COIN) has been a hot topic over the past decade with the US-led coalition wars in Iraq and Afghanistan. If you are new to the topic, there is an endless stream of commentary and analysis on the topic.
In preparation for the sesquicentennial, the Civil War Trust has just released a series of animated maps of the Battle of Gettysburg. This includes re-enactments, photos, and impressive computer-animated maps, all with music and narration.
Stephen Morillo has produced a short overview of the historiography of military history, including its origins, evolution, and controversies.This is the first book every aspiring military historian should read.