I'm with Loki Strikes here and take a contrarian view

. Rifles and artillery is the best combination to take on rifles (who might have cavalry soon). Artillery are immune to flanking and easily cracks a city defended by rifles. Draft infantry (with weak promotions) don't do well against rifles fortified on a hill or if they have CG promotions and cannons used to soften them up take casualties too. Infantry upgraded with CR promotions can take on rifles but draft infantry have a high casualty rate.
Besides that I can't see what the production benefit of AL that everyone raves about is

So you can build factories and coal plants and ruin the health of your cities... but is that what you want if you're a warmonger? You're caught in a dilemma. Small cities don't get health problems with the buildings but they don't produce enough base hammers to make building the factory and coal plant (totalling 450 hammers) worthwhile, so why not just continue to make units using forge + SP + PS = +60% production bonus (and drydocks if building ships) ? Large cities have plenty of population and hammers but the 10 unhealth introduced by factory and coal plant means either they have (say) 5 unhealth (stopping growth and efficient use of drafting or Slavery) or the city builds a hospital and public transportion (totals 350 hammers) and if its a really big city grocer and supermarket as well (another 300 hammers). That delays the output of units while all the infrastructure is built and it only adds +75% production. So what really is the benefit for a warmonger already using drafting and whipping (perhaps with the Kremlin)?