Don't forget about the ever important squadron function of supply. While the glory tends to go to squadrons that bomb, fight or carry out surveillance, a good number of squads are dedicated to the equally important -- and underrated -- task of supplying troops and allies surrounded by enemies.
A lot of those tasks have been carried out by the Lockheed C-130 Hercules, which has been in service in the U.S. Air Force since 1957. That massive, propeller based plane has transported troops and supplies reliably for over 50 years now. A squad of those may not be the most romantic thing in the world, but the ability of those planes to carry huge amounts of supplies and troops has made the difference in a lot of conflicts.