History of Galveston, Texas Harbor and headed for Havana, becoming the final Confederate ship to slip through the blockade from any Southern port. In the late 1890s, the Fort Crockett defenses and coastal artillery batteries were constructed in Galveston and along the Bolivar Roads. Juneteenth, which is the oldest nationally celebrated commemoration of the ending of slavery in the United States, owes its origins to the announcement of the Emancipation Proclamation upon the return of Union forces to Galveston in 1865. Galveston was the first city in Texas to provide a secondary school and public library for African Americans. At the end of the
Battle of Galveston to destroy the grounded "Westfield" with explosives rather than let it fall into enemy hands. Renshaw and several Union troops were subsequently killed when the explosives were set off too early. Union troops on shore were convinced that their own ships were surrendering and, therefore, laid down their arms. The remaining U.S. ships did not surrender and succeeded in retreating to Union-controlled New Orleans. The Union blockade around the city of Galveston was lifted temporarily for four days, and Galveston remained the only major port that remained in Confederate hands at the end of the war. The Confederate Congress stated