Discipline speedily goes to the dogs and instruction becomes impossible.
Successful prosecution of the work of chasing _ladrones_ in the Philippines requires a thorough knowledge of local topography and of local native dialects.

Spanish is of use, but only in dealing with educated Filipinos.

A knowledge of the Filipino himself; of his habits of thought; of his attitude toward the white man; and toward the _illustrado_, or educated man, of his own race; ability to enter a town and speedily to determine the relative importance of its leading citizens, finally centring on the one man, always to be found, who runs it, whether he holds political office or not, and also to enlist the sympathy and cooeperation of its people; all of these things are essential to the successful handling of brigandage in the Philippines, whether such brigandage has, or lacks, political significance.
The following parallel will make clear some of the reasons why it was determined to use constabulary instead of American soldiers in policing the Philippines from the time the insurrection officially ended:-- United States Army Philippine Constabulary Soldier costs per annum $1400.

Soldier costs per annum $363.50.
(Authority: Adjutant General Heistand in 1910.) American soldiers come from Constabulary soldiers are America.

enlisted in the province where they are to serve.
Few American soldiers speak All constabulary soldiers the local dialects.