How did the unions plan for winning the civil war differ from the confederacy's

The Union originally wanted to reunite the country, but after the Emancipation Proclamation of 1863, the Union goal changed to include the abolition of slavery. The Confederacy had the same goal throughout the war: to incorporate all slave states and secede from the Union, survive, and defend its territory.

Difference between Confederate and Union Constitution ... Northern states (the Union) believed in a unitary country, free from slavery and based on equal rights; conversely, Southern states (the Confederates) did not want to abolish slavery and, therefore, formally seceded in 1861