A formal portrait of William Brattle in military uniform, painted by John Singleton Copley in 1756.

This portrait depicts William Brattle, a prominent figure in colonial Massachusetts, captured by John Singleton Copley in 1756. Copley, working in Boston before his move to London, developed a reputation for his precise rendering of textures and social status. In this work, Brattle is shown in his military uniform, reflecting his role as a major general in the provincial militia. The composition follows the conventions of eighteenth-century portraiture, placing the subject against a backdrop that suggests both authority and civic standing.

Copley demonstrates his technical skill through the treatment of the uniform. The red coat, with its gold-trimmed lapels and metallic buttons, is rendered with a focus on the weight and sheen of the fabric. The subject wears a powdered wig, a standard accessory for men of his class during this period. His posture is relaxed yet formal, with one hand resting on the hilt of his sword and the other gesturing outward. The background includes a subtle suggestion of a natural setting, which serves to balance the structured, artificial nature of the military attire.

This painting provides a clear view of the aesthetic preferences of the colonial elite. Copley avoids unnecessary ornamentation, choosing instead to focus on the physical presence of the sitter. The lighting is even, allowing for a detailed examination of the facial features and the specific details of the uniform. As an early work by Copley, it shows the artist's ability to capture the likeness and social identity of his subjects with clarity. The portrait remains a record of the political and social hierarchy in pre-Revolutionary America, documenting the appearance of a man who held significant influence in the Massachusetts Bay Colony.