Everything in italics advanced level info. Not vital for the novel. Wehrmacht (German Armed Forces) 1935-1946 (Preceeded by the Reichwehr) Heer (Army) Luftwaffe (Air Force) Kriegsmarine (Navy) SS (Schutzstaffel) Waffen-SS (Armed-SS) Army (Field Marhal or General) 2+ Corps (100,000 to 150,000 men) Corps (General or Lt. Gen.) 2+ Divisions (25,000 to 50,000 men) Division (Lt. Gen or Maj. Gen.) 3+ Brigades or Regiments (10,000 to 15,000 men) Brigade (Maj. Gen, Brigadier Gen, or Colonel) 3+ Battalions (1500 to 3500 men) Regiment (Colonel) 2+ Battalions (1000 to 2000 men) Battalion (Lt. Col.) 4+ Companies (400 to 1000 men) Company (Captain or Major) 2+ Platoons (100 to 250 men) Platoon (Troop) (1st Lt.) 2+ Squads (16 to 50 men) Squad (2nd Lt.) 2+ Sections (8 to 24 men) Section (2nd Lt.) (4 to 12 men) Wing (Geschwader) (3-4 Groups) Group (Gruppe) (3 Squadrons/40 planes/1 airfield) Squadron (Staffel) (9-12 Planes)
Calibers
0-10mm [Anti-Personnel] (Rifle/Machine Gun)
20-30mm [Anti-Personnel/Light Anti-Aircraft] (Light Infantry Support Artillery)
40-50mm [Light-Med Anti-Armor]
60-90mm [Heavy Anti-Air/Med-Heavy Anti-Tank]
90-120mm [Very Heavy Anti-Tank/Med-Heavy Field Artillery]
120-150mm [Heavy Anti-Entrenchments/Field Howitzers]
200-350mm+ [Super Heavy Anti-Ship/Anti-Fortification] (Naval Guns/Railway Guns)
I will be adding more to this as I see fit.