What scale? There are a lot of modern soldiers in 1/35. Tamiya, Trumpeter, Academy, ICM (they do good guys and bad guys), Zvezda (mainly modern Russians), Dragon are just the mainstream injection molded plastic modern figures that come to mind.
There are countless resin figures made by smaller companies like Warriors, Alpine, Verlinden, Blast, MIG, Live Resin, CMK, Legend, NATO in Miniatures, Accurate Armor, etc.
Right now, I think Trumpeter's modern military figure line is tops among the injection molded plastic figures in terms of variety.