Colección Ejercitas Reunion de Tropas is an original oil painting by Salvador Caballero, a Spanish artist recognized for his finely executed historical and military compositions. The scene depicts a mounted cavalry regiment assembling across an open field beneath a dramatic sunset sky, with officers and soldiers gathered in quiet preparation. Rich earth tones are contrasted by vibrant military uniforms, while Caballero's detailed brushwork and masterful handling of light create a powerful sense of atmosphere and historical authenticity. Measuring 51 × 61 cm (20" × 24"), this original oil painting exemplifies the artist's dedication to traditional realism and equestrian subjects.