The Irregular Wars rules requires us to record the resolve of units, which can gradually erode until they break. Similarly James's Midgard rules use Stamina in the same way and this needs to be measured in some way.
James uses innovative magnetic basing but I am not sure thats the way for me.
Initially I had thought casualty markers as below, however these are difficult to read from a distance, easily knocked and, given I need 50 or so, thats a heck of a lot more figures to buy, paint and base.
A search on ebay showed a different solution, so I am giving these a go and just need to decide what colour they should be, 5 options numbered 1-5 from left to right.