My first thought is the Virtual Armchair General - if I recall rightly. He has a range for the Spanish American War. If you can find a source, sadly doubtful, Frontier used to be a good source. Of the top of my head that's all I can think of. Keep an eye on Blue Moon Manufacturing's 15 mm offerings if you like Africa exploration games you are in for a treat come summertime. There's a ton of offerings in 15 mm so go browse around - some of the main ones not mentioned: Essex, Minifigs, LKM direct (QRF, Freikorps), Old Glory 15s, Irregular, Peter Pig - and that's really just a glancing blow to what's out there. Probably more options in 15 than in the larger scales when you add it all up.