The diaries of William Heath (1737-1814) span from late June 1775 until 1804. Heath was from Roxbury, Massachusetts and his diaries start in late June 1775, shortly after he is appointed brigadier-general in the Continental Army, continue through the dissolution of the Continental Army after which Heath returns to Massachusetts, and the diaries continue until 1804, about a decade before his death. Diary entries include Heath’s comments on daily military life, such as the movement and locations of both the enemy and Northern Army, marches, brigade distribution, prisoner escapes, courts-martial, executions, work details, the reenlistment of troops, the personal health of Heath (including his smallpox inoculation on 21 Apr. 1776 and its aftereffects). Heath also describes movements of the French fleet and army, some battles, and sometime lists casualty figures. After the war, Heath’s diary entries refer to global events, including politics, wars, and natural catastrophes, in particular French politics between 1789 and 1793. Many entries include notes about weather.