As you can see on this picture, division patchs and ranks were not the only patchs which the infantryman had. Others, which had different meaning were used.
That's what we will see here.

DIVISION PATCHS:

- 1st Infantry > 40th Infantry
- 41st Infantry > 90th Infantry
- 91th Infantry > 108th Infantry
- 1st Cavalry > 66th Cavalry
- 1st Armor > 50th Armor

- Corps and Larger Units

- Army Air Forces and Elite Units

- Speciality Badges

- Cap Badges

More informations about "how to wear those badges and patchs": Dressing rules.

On this picture, Staff Sergent Walter D. Ehlers which received the Medal of Honor on 19th december 1944 for its feat against the enemy on the 9th and 10th june 1944.