When I was reading about the Napoleonic Wars in Spain, I came across a passage explaining that when the Spanish peasants revolted against the French puppet government, they started the "guerrillito," or something spelled similarly, which meant "little war." It was called the "little war" because of the famous Spanish partisans (or "guerrillas"), who didn't fight in the conventional method of warfare, instead relying on surprise attacks, and then quick retreats into mountains or other areas where the French could not find them. Thus, the passage explains, they more or less invented guerrilla warfare.
In Spanish class last week, we were talking about Pinoché and other South American dictators, and we started talking about guerrilla warfare. Since I (thought) I knew the word for guerrilla warfare, I supplied the word "guerrillito." However, my teacher told me that word doesn't exist, and explained that the world "little war" in Spanish would be "guerro pequeño." After looking around on SD, I couldn't find any supporting evidence for this.
Because of that passage I read, I thought there was some sort of rule that operated along the lines of "perro" turning into "perrito" (dog to "little dog" or puppy). So, after this long winded explanation, is there a word (NOT a phrase) in Spanish that means "little war"?