The current article presents the results of the research paper called "Nano-engineered sprayed military uniforms".The project is put forward by the Escuela de Logística del Ejército Nacional de Colombia in agreement with EmpresaIndustrias W. Wilches S.A.S.The purpose of this study is to develop a waterproofing technique that could generate a water repellent effect on the military clothing of the National Army.Our Lab demonstrated that mixing chemical compounds with silicon dioxide Nano particles (SiO2) and applying several procedures to fabric samples (e.g.camouflage denim) it is possible to obtain the most efficient compound according to the contact angle theory.Subsequently, all the results were corroborated through water repellency laboratory testing by spraying it on the fabric -as the method of application.Spraying also allowed highlighting the significant improvement of the water repellent effect on the applied fabrics compared to the conventional fabrics.