English: Artist and soldier w:Rudolph von Ripper in 1943, wearing the red bull shoulder badge of the US 34th Infantry Division, during his time as a US Army war artist. Published in "The Army at War", 1943.
This work is in the public domain in the United States because it was published in the United States between 1929 and 1977, inclusive, without a copyright notice. For further explanation, see Commons:Hirtle chart as well as a detailed definition of "publication" for public art. Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
Published without a copyright notice in United States War Finance Department publication The Army at War, 1943. Due to the nature of that publication, and because von Ripper is depicted in uniform, I strongly suspect this is also PD due to being a work of an employee of the US government as part of their official duties, but as no photographer is given I can't definitely confirm that.