I am reading an old newspaper published in the 1940s about a soccer game.
The positions were GK, RB, LB, RH, CH, LH, RW, RI, C, LI, and LW. B is for backs and W is for wings which are obvious, but I can't figure out what H and I mean.
This is the standard 2-3-5 formation, which was the most popular formation in the sport from the 1890s until about the 1930s, but which is now extremely archaic.
What you're looking at here is the pyramid formation or a close variation. In modern terms, we'd denote this as a 2-3-5 formation: