I posted about this kind of brushwork here, and included one of Trübner's paintings.
His Wikipedia entry is here, and from it you might want to go to the German entry, which has more detail.
Below are images of some of Trübner's paintings in this style, most of which are from around the year 1900.
The kind of brushwork I've been mentioning can be seen at the lower left.
A later landscape painting with even more obvious brushwork.
This portrait is dominated by strong brushwork -- especially on the horse.
Heavy, flat brushstrokes are used selectively here: note the smooth background and largely smoothly painted coat and vest.
A later painting where Trübner was still using that style.
This was made before Fauvism and its arbitrary use of color. The use of blue on the figure helps relate it to the background. (I've noted in some other posts that it's not easy to fit nudes into outdoor settings with plenty of foliage ... skin tones and foliage are rough complementary colors. Here Trübner chose to use a nonrealistic color, blue, on both the nude and the folliage.)