Military protocol and tradition.
No. Brown. The navy and air force had blue uniforms.
If it's a member of the Air Force embedded directly with an Army unit, yes. Case in point - Tac-P, who call in airstrikes and such. They're usually assigned directly to Army units. In an operational environment, they are very high value targets. Wearing a distinct uniform could make them stand out particularly to an enemy, and give them the (in this case, correct) idea that they'd be a target worth taking out. In the case of entire Air Force units attached to an Army unit, but still operating as a homogeneous, self-contained unit, they're likely to retain their Air Force uniforms.
All of the MLB players currently wear Majestic uniforms.
I don't know about Army Aircrew wings but you are authorized to wear Navy Aircrew Wings in the Air Force, if you can manage to get them. Best bet is to check Air Force Uniform Regulations publications.
Personnel that have been discharged on medical disability may wear their uniforms, properly, of course. Those that are discharged, but are required to remain in the reserves will have to wear their uniforms for drill.
No. Brown. The navy and air force had blue uniforms.
The uniforms that soldiers wear on base are typically referred to as "utility uniforms" or "combat uniforms," depending on the military branch. In the U.S. Army, for example, they wear the Army Combat Uniform (ACU), while the Air Force uses the Airman Battle Uniform (ABU). These uniforms are designed for functionality and comfort during daily activities and training, rather than ceremonial purposes.
Not on Air Force uniforms, no, although I have seen TAC-Ps wear it when they were wearing Army issue ACUs while assigned directly to Army unit.
They wear the same uniforms as the rest of their unit. This may be the ACU or MultiCam uniform for the Army, the MARPAT uniform for the Marines, the ABU for the Air Force.... special operations units have a bit more leniency in what they wear as far as uniforms go. They might wear any of the above, or even the phased out BDU, DCU, or ERDL uniforms if they saw fit to.
That would be up to you.
delta are authorized not to wear any BDU's at all. they wear civlian dress and have civilian appearance to blend in.
none. no kids like to wear uniforms.
yes, they wear uniforms every sunday at home games. sometimes they wear their regular uniforms away.
scientist uniforms
Uniforms are cheaper.
yes schools in Australia do wear uniforms but some don't
No you do not wear uniforms I know because I go here