The second edition of Illusions of Glory: The Great War on the Eastern Front (“IoG”) is currently on the P-500 list.
Links to prototype unit counters, player aid cards, mapboard, and playbook can be found on the IoG webpage.
Pete Chadwick posted in BGG that he’s planning to buy “Illusions of Glory, 2nd Edition” but had issues with a number of place names on the mapboard. I used The West Point Atlas of World War I to name those spaces (see below).