The United States Army flag is white with a blue War Office Seal, a red scroll with the words "United States Army", and blue numbers indicating the year the Army was founded. The flag also has streamers that represent the campaigns the Army has fought in. 
Colors 
White: The background color of the flag
Red: The color of the scroll that reads "United States Army"
Blue: The color of the War Office Seal and the numbers "1775"
Symbols
War Office Seal: A replica of the official seal of the War Office, which includes Roman armor, a sword, a bayonet, a cannon, and more 
Scroll: A red scroll with the words "United States Army" written in white letters 
Numbers: The blue Arabic numerals "1775" indicate the year the Army was founded 
Streamers: Ribbons that represent the campaigns the Army has fought in