6 The battle takes its name from the San Jacinto River
On April 18, a Mexican courier, who was carrying intelligence on the locations and future plans of all the Mexican troops, was captured by the Texians. Sam Houston thus came to know that Santa Anna was not far away and was commanding only a small force. He gave a rousing speech to his men, urging them to “Remember the Alamo” and“Remember Goliad”. His unit then raced towards Santa Anna’s force and on April 20, the two camps were around 500 yards (460 m) apart. The site was along the San Jacinto River, near present-day Houston, Texas. The terrain, which had many thick oak groves separated by marshes, was more suited to the Texians than the alien Mexicans.
7 The Mexican force outnumbered the Texian by more than 400 men
On the morning of 21st April, 540 Mexican reinforcements arrived taking the number of men under Santa Anna to more than 1,300. The Mexican force now outnumbered the Texian unit, whose strength was around 900. Not long after the Mexican reinforcements arrived, Sam Houston ordered his men to destroy Vince’s Bridge, which was located 5 miles (8.0 km) away. The measure was taken to slow down any further reinforcements from joining the Mexican ranks.