The United States of America sent military units all over the world to fight the Islamic States and the Rogue AIs that had cropped up during the Second Great Depression. They even managed to get the fleet carriers and escorts anchored at San Diego back out to sea to face off against the Chinese forces looking to invade Australia. That took everybody working together to do, and the resulting navy task force was a truly American force. Ground troops were another matter. Most military bases in America fell to control of the State they lived in when the Federal government collapsed, and the States were not overly enthusiastic about giving them back to the Feds. So the various reserve and guard troops and fighter squadrons that traveled around the world to fight the good fight flew Texas, California, or Dixie flags above their American flags. That was a practice that stuck all the way to Jack’s time. It was utterly normal. A reminder that the States were in charge, even if that control had slipped a fair degree by his time.