Update README.md

README.md

@@ -38,6 +38,8 @@ This mod counts as a rulesets. This means that It completly replaces the vanilla
 
 -Considering the fact that mainteining an army will be a serious investment, the early game will see a decline in snow-balling battles and the late one will witness to a lower number of wars founded merely on the strenght's number. Now the battlefield won't just host bloody coflicts based on the science/industious levels of the two opponents, but also a major one about their economical situations.
 
+-Army Upkeep raises by +5% each time you get into the next era (up to +35%)
+
 -Great General points are offered by buildings (Barracks, Armories, Military Academies) and Wonders (Statue of Zeus, Alhambra, Himeji Castle, Kremlin, Brandenburg Gate, Pentagon)
 
 -Great Generals are gained 4x slower when at peace