Pilots wearing oxygen masks

[IckyATLAS]

I have noted that after climbing a certain altitude around 4'500 meters german pilots in BF109 will wear the oxygen mask,  and when coming down at lower altitudes they take it away. This is excellent.

 

Is this behavior also the same for all pilots, russian, american etc. and in all planes ?

 

 

[AEthelraedUnraed]

I've noticed pilots from all nationalities do it yes, but I can't say for sure if all planes do it. For instance, the Hs129 is not supposed to have an oxygen mask, but I've never taken one to a high altitude to see what happens.

[Motherbrain]

I've noticed in the Bf110 the pilot will don a oxygen mask while the gunner will not. (I suspect beacuse the gunners would be vastly more difficult to animate with masks).