Neo-Impressionism heading for pointillism but with rather more people than the last post, these by French artist Albert Dubois-Pillet (1846-1890). He was an army officer too which probably accounts for the varied locations.

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“Little Circus Camp.” No date. Oil on canvas. The Phillips Collection, Washington, DC. In the public domain in the United States because the artist has been dead over 70 years. via https://commons.wikimedia.org/wiki/File:Albert_Dubois-Pillet_-_Little_Circus_Camp_-_Google_Art_Project.jpg
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“Vue de Paris.” 1885. In the public domain due to age. via https://www.wikiart.org/en/albert-dubois-pillet/vue-de-paris-1885
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“Le Quai de Bercy.” ca. 1885. In the public domain due to age. via https://commons.wikimedia.org/wiki/File:Dubois-pillet-021.jpg

Landscapes with rainbow colored skies by Belgian painter Georges Lemmen (1865-1916). Pointillist school.

"Plage a Heist." 1891-92.
“Plage a Heist.” 1891-92. Collection of the Musée d’Orsay, Paris. In the public domain in the United States because the artist has been dead over 70 years. via http://www.artcyclopedia.com/artists/lemmen_georges.html
"View of the Thames." 1892.
“View of the Thames.” 1892. Collection of the Rhode Island School of Design Museum, Providence. In the public domain. via https://www.wikiart.org/en/georges-lemmen/view-of-the-thames-1892
"Factories on the Thames." 1892-1894.
“Factories on the Thames.” 1892-1894. In the public domain. via https://www.houzz.com/product/125074943-georges-lemmen-factories-on-the-thames-18×27-wall-decal-contemporary-wall-decals