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.
they wore green uniforms but the unifroms were different in between army units and the marines had 2 different uniforms
No. The SS was a NAZI force separate from the GERMAN army. The main differences being that the German army wore their grey uniforms and fought according to the Geneva convention (they did not commit atrocities, they were the main force used for invasions etc.) whereas the SS was a force of Nazi fanatics, they believed in Hitler not Germany, they wore camouflage or Black uniforms.The SS was responsible for the Holocaust, and the slaughtering of the Slavs.See related question.Additional AnswerA correction the the above answer. The SS stopped wearing black uniforms around 1937. During the war, they wore Army-style uniforms with SS insignia. SS Panzer crews wore black uniforms similar to the Army's black unforms -however, these were nothing like the prewar SS 'black uniform'. It's also incorrect to say that the SS was a force of 'Nazi fanatics', as many Waffen-SS units were formed from Western and Eastern volunteers who were more anti-communist than nazi.
Many people falsely believe the flag is worn backwards. When a soldier deploys to a combat zone, they wear the flag on the right sleeve. The stars always point towards the battle - i.e., the front.
The ACU uniform adopted in 2005 is. The current Multi Cam uniforms being issued to units deploying to Afghanistan are not.
Army officers have to buy their own uniforms because they make more money than enlisted soldiers, who do not but their own uniforms.
they wore green uniforms but the unifroms were different in between army units and the marines had 2 different uniforms
The current Japanese Land Self-Defense Force is a well equipped but small and inexperienced army. It almost never deploys outside Japan. I believe they are equipped well.
vanguards
Vanguard
Delta Force
in 1914, the portuguese uniforms were given by the british army, so they were equal to the british army uniforms
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.
No. The SS was a NAZI force separate from the GERMAN army. The main differences being that the German army wore their grey uniforms and fought according to the Geneva convention (they did not commit atrocities, they were the main force used for invasions etc.) whereas the SS was a force of Nazi fanatics, they believed in Hitler not Germany, they wore camouflage or Black uniforms.The SS was responsible for the Holocaust, and the slaughtering of the Slavs.See related question.Additional AnswerA correction the the above answer. The SS stopped wearing black uniforms around 1937. During the war, they wore Army-style uniforms with SS insignia. SS Panzer crews wore black uniforms similar to the Army's black unforms -however, these were nothing like the prewar SS 'black uniform'. It's also incorrect to say that the SS was a force of 'Nazi fanatics', as many Waffen-SS units were formed from Western and Eastern volunteers who were more anti-communist than nazi.
Many people falsely believe the flag is worn backwards. When a soldier deploys to a combat zone, they wear the flag on the right sleeve. The stars always point towards the battle - i.e., the front.
The ACU uniform adopted in 2005 is. The current Multi Cam uniforms being issued to units deploying to Afghanistan are not.
what provides means to observe & celebrate events in army history
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.