Chile. It's in South America.
A country whose flag has the colours green, white and red
The flag with white and red stripes is the flag of Poland.
That is the flag of the Red Cross, not of a country. The flag of Switzerland has a red background with a white cross. The flag of Tonga has a red cross on a white field, the corner of a red flag.
Their uniforms were gray. If needed...the Confederate flag had a red background with a blue X across it outlined in white. The uniforms of the Confederacy were gray. Their flag was red, white, and blue.
Red, White and gray
Switzerland- the Red Cross flag is the reverse image.
Japan's flag is white with a red dot in the center.
China's flag is red with five yellow stars.
The Ohio state flag features the colors red, white and blue. It was designed by John Eisemann and was officially adopted as the official state flag in 1902.
Venezuela
The red dragon of whales is the oldest flag in the world.