Well Jan, I've only made two, maybe three models for WW2 veterans, but have done a fair few paintings where veterans have been involved, either as signatories to prints, or as the recipient of a 'surprise gift' from offspring or relataives. In all these instances, the initial reaction has been similar; one of silence, followed by a 'far away look', for want of a better description. This has often been followed by a distant smile and a guarded, one could almost say stunned, thank you.
A little later, sometimes but not always, a story or two might emerge.
I do know that those veterans who have been the recipients of original paintings, or prints, of 'their' aircraft, have always hung the picture in a place of honour, and always, without fail, they have mentioned it whenever I have spoken to them again.
The thing is, I often wonder where their thoughts go when they view the picture.
Terry.