Regiment
military unit size designation
36th Infantry Regiment
370th Infantry Regiment
371st Infantry Regiment
372nd Infantry Regiment
37th Infantry Regiment
37th Regiment Massachusetts Volunteer Infantry
382nd Infantry Regiment
38th Cavalry Regiment
38th Infantry Regiment
39 Combat Engineer Regiment
39th Arkansas Infantry Regiment
39th Infantry Regiment
39th Regiment Royal Artillery
3rd/4th Cavalry Regiment
3rd Virginia Infantry
40th Infantry Regiment
40th Regiment Royal Artillery
40th Virginia Infantry
414th Infantry Regiment
41 Combat Engineer Regiment
41st Infantry Regiment
43rd (Wessex) Reconnaissance Regiment
43rd Infantry Regiment
44th Infantry Regiment
44th Virginia Infantry
45th Infantry Regiment
45th Infantry Regiment
45th Virginia Infantry
46th Virginia Infantry
473rd Infantry Regiment
47th Infantry Regiment
47th Regiment Royal Artillery
48th Infantry Regiment
49th Infantry Regiment
49th North Carolina Infantry
49th Quartermaster Group
49th Virginia Infantry
4th/19th Prince of Wales's Light Horse Regiment
4th Bengal European Regiment
4th Cavalry Regiment
4th Michigan Cavalry
4th Regiment, Royal Australian Artillery
4th Regiment Royal Artillery
4th Lithuanian Vanguard Regiment
4th Virginia Infantry
501st Infantry Regiment
502nd Infantry Regiment
503rd Infantry Regiment
506th Airborne Infantry Regiment Association
508th Infantry Regiment