Yet he is comparatively unknown. His Wikipedia entry in English is brief, as are similar entries in French and Italian. Little more was gleaned from a four-page Google search.
The link above mentions that he had a good deal of training in art, both conventional and modernist. Various sources offer various categorization of his style such as Expressionist, Fauvist, Cubist, Symbolist, etc. To me, asked to select a single type, I'd call him a Cubist during his most prolific period. But his cubism was superficial compared to that of, say, Picasso.
La Fresnaye's career was cut short by the tuberculosis he caught while serving in the Great War. The Wikipedia entry mentions that, postwar, the disease greatly hampered his productivity.
Two versions of Alice, whoever she might have been, at different points in his career.
Cubist-lite construction, Fauvist-lite colors. The subject is a town by the Marne River that has been associated with battles and the military for many years. During the 1939-1940 campaign it was the headquarters of General Georges, who was in charge of operations in northeastern France. I drove through it once on the way to Château-Thierry. Yes, it's hilly there.
Here La Fresnaye seems to be experimenting with square-brush technique.
Pre- Great War painting. His father was an army officer. Available sources do not indicate whether La Fresnaye was conscripted or was commissioned when he was about age 20 and then was in the reserves until the war -- one or the other was likely. In any case, he was familiar with the army and painted some military subjects.
Another military subject, a cavalryman.
Perhaps his best-known work.
Note the squaring. La Fresnaye clearly constructed some of his paintings carefully.
A painting of the artist and his brother with a balloon shown in the upper left part of the canvas.
Postwar, La Fresnaye's style because more conventional in line with what other modernist were doing.
Georges Guynemer who died in 1917 was one of France's most famous Great War aces.
Although La Fesnaye was from northern France, this property is near Nice.