In Lieutenant Stool, Albert Edelfelt presents a seated military officer, dressed in a formal uniform. The color palette is dominated by rich blues and deep browns, creating a sense of authority. The lieutenant's expression is serious, reflecting the gravity of his position.

The background is muted, allowing the figure to stand out prominently. The painting is executed in oil on canvas, a common medium for portraits during the 19th century. Edelfelt's technique showcases fine brushwork, particularly in the detailing of the uniform and facial features. The dimensions are approximately 70 x 90 cm, making it a sizable portrait.

The composition is balanced, with the lieutenant positioned centrally against the subdued backdrop. Albert Edelfelt was a Finnish painter known for his realistic style and ability to capture the essence of his subjects. 'Lieutenant Stool' is a notable example of his portrait work, reflecting his interest in military themes. Interestingly, Edelfelt often painted prominent figures of his time, and this work may have been commissioned.

His portraits are celebrated for their psychological depth and attention to detail.