Later in history, Fabian strategy would be employed all over the world. Used against Napoleon's Grande Armée, the Fabian strategy proved to be decisive in the defense of Russia. Sam Houston effectively employed a Fabian defense in the aftermath of the Battle of the Alamo, using delaying tactics and small-unit harrying against Santa Anna's much larger force, to give time for the Army of Texas to grow into a viable fighting force. When he finally met Santa Anna on the fields of San Jacinto, Houston chose the time for attack equally well, launching his forces while the Mexican Army was lounging in siesta. The resulting victory ensured the establishment of the Republic of Texas. With the victory at San Jacinto, Houston's detractors were able to see the validity of his delaying tactics. During the First World War in German East Africa, General Paul von Lettow-Vorbeck and General Jan Smuts both used the Fabian strategy in their campaigns.