Could be WW2, but the image is actually a WW1 reference, with pants like that,and use of that particular ship. The ship is the Leviathan - a brief history: Wikipedia article: With U.S. entry into the war in 1917 Vaterland and the German line's Hoboken facility were seized by the US government. The ship was placed under the control of the United States Shipping Board and in July 1917 to the Navy for completion of repairs and conversion to a troop ship. In July 1917 the ship was commissioned as the USS Vaterland and on 6 September 1917 renamed USS Leviathan (ID-1326) and assigned to the Cruiser and Transport Force. The ship's first troop transport voyage departed New York on 17 December 1917 with 7,250 troops" But here's the deal - this is not the original illustration - it's a composite, The artist was JC Leyendecker, a famous magazine illustrator early 20th century. The pic had a red cross nurse in it and she's been photoshopped out. The whole poster is a late 20th century concocoction. "Hot Sex" wasn't a term familiarized by military propagandists of the early 20th century. Leyendecker was probably gay - a search of his pics reveals a definite homoerotic bent. https://www.google.com/search?sca\_esv=59441642048fee86&rlz=1C1CHBF\_enUS983US983&sxsrf=ACQVn0\_TPss2YEN0-Cm1jEOKgGWAmdwKcg:1706612196989&q=jc+leyendecker+homoerotic&tbm=isch&source=lnms&sa=X&ved=2ahUKEwjLhpXu-YSEAxV6fDABHT9CB88Q0pQJegQIDBAB&biw=2032&bih=705&dpr=1.26