caption: The image shows a poster of the flag of the Infanterie-Regiment Nr 15 Garde, which is a pole with a logo and text at the bottom. The logo is a shield with a lion rampant on the left side and a crown on the right side, and the text reads "Infanteries-Regiments Nr15 Garde". The flag is composed of a white background with a blue border and a red and white checkered pattern. The pole is a light blue color and the logo is in the center of the shield.