How does "In Another Country" reflect a modernist point of view?

Hemingway's short story about men at an Italian hospital during World War I reflects a modernist point of view in three different ways. First, modernists attempted to portray the modern world in both form and content. To show the fragmentation of this new world, they often omitted traditional elements of fiction such as expositions, conflicts, and resolutions. Rather than spending any time establishing the character of the narrator, Hemingway simply places him in Milan during World War I. He doesn't even tell us the man's name or anything about him other than he may have played football and that he is learning Italian. Hemingway called this the "iceberg principle," reflecting his attitude that a good story would say less, but in its suggestiveness would say much more.
This lack of exposition is followed by a complete lack of true conflict or resolution. In traditional short stories the conflict generally leads to an inevitable resolution, such as a completion of a great deed, a death, a birth, or a wedding. The best we get from Hemingway is the irony that the major escaped death in a war which claimed millions yet his wife died after only a short illness.
Hemingway is also thoroughly modern in his style. He brings a simplicity and succinctness to his stories much like a newspaper reporter who attempts to hone down his story to a series of simple facts without any editorial comments. Newspaper writers are often limited by the number of words they can submit so they strive to say as much as possible in just a few words. Hemingway's stories, and "In Another Country" is no exception, are virtually devoid of descriptive adjectives or long paragraphs describing setting or character. He hoped to pack as much meaning as possible into direct, declarative sentences. He succeeds in the story's opening sentence: "In the fall the war was always there, but we did not go to it any more." This simple statement suggests several things. It states facts but also portends a feeling of despair as the "war" and its experiences hover over the narrator's story.
Finally, Hemingway, like the great English war poets of the time, casts doubt on mankind's use of war as a way to bring men bravery and glory. In previous wars, literature tended to celebrate the heroes (think of the "Iliad," "Song of Roland," "The Charge of the Light Brigade"). Instead, World War I is bereft of heroes in Hemingway's modernist outlook. The major, who had been badly injured in the war, scoffs at the idea of bravery:

The major, who had been a great fencer, did not believe in bravery, and spent much time while we sat at the machines correcting my grammar.

The major seems obsessed with grammar because it is a way for him to control the world. Grammar makes sense and has rules, unlike the war which is arbitrary and confusing.