Military histories can include details of military engagements and campaigns, allowing you to learn more about the places your ancestor served, battles, illnesses, supplies, food, weather, and terrain. In some cases you'll find day-to-day accounts of troop movements and daily routines.
Histories are typically compiled from a variety of sources, including official military records, as well as diaries and first-hand accounts.
Military histories range from an official government history to first hand accounts of a battle in addition to detailed histories of a specific military unit.
Through military histories you can know the units in which your ancestors served and learn about what battles they fought in, in addition to reading about experiences of their military career.