For your consideration, here is a selection of photos that capture emotional relationships between animals and soldiers.
These photos were taken in the late 1800's and capture the infancy of American Baseball. The Philadelphia A's (Athletics) are featured in a series of action poses, and considering the time period, they are relatively groundbreaking.
Founded in 1898, Outdoor Life was originally a magazine of western adventure. Including hunting and fishing tips, fiction and photography; it was the definitive sportsmens publication.