 After the Battle of Calumpit from April 25 to 27, 1899, only seven or eight of them remained in the regular Filipino army.In the Battle of Paye on December 19, 1899, Bonifacio Mariano, a sharpshooter under the command of General Licerio Gerónimo, killed General Henry Ware Lawton, making the latter the highest ranking casualty during the course of the war.During the war, Luna also formed other units similar to the sharpshooters.