"Whenever I look at history, and here I mean the entire spectrum of the written historical record, I see it continually and irreversibly shaped by military conflict. For me, connecting the dots between civilizations and specific time periods using a scope of military history allows one to see how conflict and military innovation not only shaped how/why our species kills each other, but also how different forms of government, economic institutions, philosophy and technology were shaped and/or created in response to these conflicts. Also, I am quite partial to the biographers of military commanders and of the specifics of military campaigns and battles on the strategic, operational, and tactical levels. Alas, I am quite the eclectic student, and though I focused on history in my undergraduate education, I feel pulled towards philosophy and literature just as strongly. A bit mixed up, I guess."
True that, military conflicts shaped history, but usually is was merely the weapon wielded by a body of the state (economy, politics etc). When that body wasn't strong enough, military victories were usually redundant. The only time where I can see long term significance for military history is in ancient times though..
Oh, and I feel rathe pulled to art these last years 
"military history is the only field of history that I really see people can 'learn from'... in the saying "those who dont learn it repeat it" or something like that. Hell, I can't remember much about Stalin, but I'm hardly going to cause a contraversial industrial revolution anytime soon."
Not true. People have learned from economical history at least as well... If they hadn't, we would now be in a new '30s economical depression..
God: Behold ye angels, I have created the ass.. Throughout the ages to come men and women shall grab hold of these and shout my name...