The war was already over. 220 Union soldiers lie dead and 100 are captured. The most ironic thing about this battle is that the Confederates had already surrendered. http://www.qsl.net/w5www/palmito.html
Lee was retreating to Richmond, VA and was cut off by Union forces at Appomattox Courthouse. This is where he and all of his men surrendered. It was a peaceful surrender and every soldier, including Lee, walked away unbothered. http://en.wikipedia.org/wiki/Appomattox_Court_House_National_Historical_Park
Union forces were supposed to link up with another smaller unit. The Confederates had realized by this time that they were losing the war after numerous defeats. General Taylor was the Confedereate leader at this time. http://en.wikipedia.org/wiki/Red_River_Campaign
The unit has to seize Sabine Pass to have the city of Beaumont and Houston within the reach of their forces. Forty two Confederates held the fort. Three hundred union soldiers died and two ships were lost. The forty two men inside the fort received medals for their actions that day. http://www.civilwaralbum.com/misc2/sabinepass4.htm#bot
This battle took place from May 18 - July 4, 1863. The Garrison was not able to hold out much longer. They were running out of supplies and troops. The Union cut off their communication and supply lines and after a few days the Confederate troops inside the Garrison surrendered to Ulysses S. Grant. http://en.wikipedia.org/wiki/Siege_of_Vicksburg
General Robert E. Lee wants to lead a second invasion into Pennsylvania. They want the northern government to give up their proescution of the war. 46,000 -51,000 men are dead, wounded or missing. The Union won. http://en.wikipedia.org/wiki/Battle_of_gettysburg
The Confederate troops in Fort Sumter were running out of supplies and the union troops were frantically trying to strengthen artilllery batteries around the fort. http://en.wikipedia.org/wiki/Battle_of_Fort_Sumter