The same as you would wear any other awarded ribbon on the Army dress uniform. I have attached a link to this question to further assist you.
The location is as shown on the chart at the related link below.
The Combat Action Badge (CAB) is typically worn on the Army Combat Uniform (ACU) or Battle Dress Uniform (BDU) centered on the left breast pocket, above any unit awards or badges. It should be positioned above the name tape and below the ribbon rack if applicable. Ensure that it is properly aligned and displayed in accordance with Army regulations.
They may wear a suit, a combat uniform, or a disguise.
Not anymore. The last uniform in which a commissioned officer wore rank on their collar was the Battle Dress Uniform/Desert Combat Uniform, which has since been replaced by the Army Combat Uniform, where the rank in worn on a flap on the front of the shirt.
Any badge/ribbon you earn goes on them, just depends on whether you wear it in badge or ribbon form (Alphas/Bravos, etc)
Matilda has a red ribbon on her dress.
BDU stands for Battle Dress Uniform. It is a type of military uniform worn by armed forces personnel in combat or field environments. BDUs typically include camouflage patterns to provide concealment in various terrains, and they are designed to be durable and functional for military operations.
Here, this salty dog explains it pretty good: http://www.leatherneck.com/forums/showthread.php?t=75876
Air crew wings are worn on the dress blue uniform along with the shooting badge and ribbon rack. Medals are worn only for formal occasions.
In the U.S. Army, soldiers typically wear the black shooting badge on the Army Combat Uniform (ACU) and the dress green uniform. The silver badge is reserved for those who have achieved higher levels of marksmanship qualification, such as expert marksman. Therefore, the specific badge worn on the dress green uniform would depend on the individual soldier's qualifications.
There is no flag on the dress uniform
The "V" device is worn on the left side of the ribbon (as you look at it), with an oak leaf cluster on the right hand side [ V @ ]