Union Flags on Sale,
These are the Federalies, (Damn) Yankees, Northern Invaders, The Union Army led by commander in Chief Abraham Lincoln. Lincoln wanted to hire Robert E Lee at the beginning of the war but Robert E Lee was a Virginia Citizen and had to remain true. The rest is history. Look here for Union Regimental flags, the official flags of the United States of America, (well not so united at this time) and other interesting tidbits of history. Let's face it, the south was mindin' its own business separating from those that wanted to run them different than they might see fit and the response was to send an armed force to command the will of the central government.
The 34 Star American flag is the most popular flag. Look for Made in America for flags of superior quality. Fort Sumter flag is very popular as well as it is where the whole shottin' match began.
Custer Battle flag is also popular.