Initals W.H.W.
https://commons.wikimedia.org/wiki/File:Unidentified_infantry_soldier_in_Union_uniform_in_full_marching_order_with_musket,_canteen,_cartridge_box,_cup,_knife,_knapsack,_and_cap_box_with_initials_%22W.H.W.%22_LCCN2010650625.jpg
Any idea who he could have been?