A detailed oil painting by Tom Roberts depicting colonial artillery soldiers during a training exercise in the Australian bush.

Tom Roberts, a central figure of the Heidelberg School, produced this work during his time in Sydney. The painting depicts a military training exercise, capturing the colonial artillery forces in a dry, sun-drenched environment. Roberts employs a palette dominated by ochres, pale yellows, and dusty browns, which effectively convey the harsh light and arid conditions of the Australian bush.

The composition focuses on the physical exertion of the soldiers as they manoeuvre a heavy field gun. The artist balances the technical details of the artillery equipment with the naturalistic depiction of the surrounding terrain. His brushwork remains loose and observational, a hallmark of his approach to capturing the atmosphere of the Australian environment. The figures are rendered with a sense of immediacy, reflecting the artist's interest in documenting contemporary life and activities within the colony.

Unlike formal military portraiture of the era, this work prioritises the interaction between the men and their machinery within the context of the landscape. The distant hills are rendered in soft, hazy blues, providing a contrast to the warm, immediate foreground. Roberts demonstrates his ability to integrate human activity into the wider environment, a theme he explored throughout his career. The painting offers a glimpse into the military culture of late nineteenth-century New South Wales, presented with the observational clarity that defined his practice. By focusing on the mechanics of the drill, Roberts provides a record of colonial life that avoids the romanticised tropes often found in historical paintings of the period.