What is the Spanish word for little wars?

Answer 1

The word is "guerrilla" which has come to mean irregular military forces engaged in asymmetric warfare, sometimes without any form of standard identification or uniform.

Answer 2

little wars = guerras pequeñas

usually the suffix 'itos/itas' signifies 'little -' (e.g. senora/senorita),

so little wars = 'guerritas'