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Difficulty Level – You may change the difficulty level by clicking on the Difficulty button and choosing a level from the
pop-up screen (otherwise it will default to the displayed level). Each level of difficulty adds 20% to every category of income
each turn for computer-controlled players,gives computer opponents increasing bonuses in combat, and subtracts from every category
of net income each turn for human-controlled players. The three easiest difficulty levels – Tutorial, Corporal, and Sergeant –
provide bonuses for the human player. First Sergeant provides no bonuses either to the player or to the computer opponent.