Chad began to use its present flag in 1960, after it achieved independence from France. When Chad adopted its flag, Romania's flag also included an emblem in the middle of the flag on top of the tricolour; this was added after World War II during the Communist era of the second half of the 20th century.

Chad and Romania Their design and size are almost identical, and only a close examination reveals slight shade differences between the blue, yellow, and red vertical stripes. The two came from totally different backgrounds. The Romanian flag dates from 1861, based on earlier versions with horizontal stripes.

Between 1995 and 1998, the Romanian naval jack was similar to the rank flags of Navy officers. Afterward, it was replaced with a 1:1 national flag with two crossed white anchors in the center of the blue stripe, similarly to the naval jack used between 1966 and 1989.

Blue-yellow-red vertical tricolor with the medium country's coat of arms in the middle, on a purple background, surrounded by a laurel wreath. In corners, the monogram of king Carol I of Romania, crowned and surrounded by a laurel wreath. Used during the Romanian War of Independence.