I too like your work Keith. Excellent painting IMHO. I don't regard it as old fashioned at all, but as one of the genres of painting figures that is still very much in vogue, for me at least. I especially like your style, the artistic quality of your painting, and the vibrance of your colours. They are like a burst of sunshine.
Its not the style of painting that counts, its the fact that you paint, and enjoy doing so. Figure painting is another form of art, and like art people have difference styles, different techniques, and different periods they prefer. Not all soldiers were on campaign, and for most they spent more time in garrison having NCO's ensure they were ***** and span for 'parade duties.'
Chris