Ha!! Both I feel. Havnt been attacked by Ninja and I dont know if Shinobei are present. But I do know that I have to leave too many men in rear areas to keep loyalty near 100% and this feels a desperate waste. Also to build border forts everywhere is gonna be seriously expensive...
If I have say 2000 koku and spend 1000 building forts does that mean I only get half the reinforcements??