Closer evaluation of border defensive needs, to have some idea of the number of forces we need:
Region 1 : Pfälzer Wald (mountain region)
Border line: 68 km.
Defense points (south to north):
- B10 road, B47 road, L504 road, L490/B427 crossing (choke points, valley/pass)
- B48 road (western edge of defense pocket)
- A6 highway (northern edge of defense pocket)
- 5 minor transit points (small roadways; overwatch)
Other areas:
Bad Dürkheim (12 km from border; pop 25k; northern fallback/supply point)
Bad Bergzabern (7 km from border; pop 15k; houses important military infrastructure; southern fallback/supply point)
Region 2 : Rheinhessen Border (plains west of Rhine)
Border line: 44 km.
Urbanized defense clusters (west to east):
- Grünstadt (pop 20k; 4 km from border)
- Monsheim (pop 10k; 3 km from border)
- Osthofen (pop 10k; 4 km from border)
Theoretical Defense lines:
Grünstadt - Monsheim (9 km length); population forward of line: 10k
Monsheim - Osthofen (11 km length); population forward of line: 15k
Other areas:
Worms (11 km from border; pop 80 k; central fallback/supply point)
Region 3 : Bergstraße/Ried (plains east of Rhine)
Border line: 13 km
Urbanized defense clusters (west to east):
- Biblis nuclear plant (4 km from border)
- Biblis (pop 10k; 5 km from border)
- Einhausen/Lorsch (pop 20k; 6 km from border)
- Bensheim/Heppenheim (pop 50k; 5 km from border)
Theoretical defense lines:
Biblis - Einhausen (6 km length, forrested; population forward of line: 5k)
Einhausen - Bensheim (6 km length, plains; population forward of line: 15k)
Region 4 : Odenwald (mountain region)
Border line: 42 km
Defense points (west to east):
- L3099 road, B38 road (each: plains between two forrest passes)
- B45 road (choke point; valley)
- 4 minor transit points (small roadways)
Urbanized areas:
Bad König (pop 10k; 3 km from border; forward fallback point from B45 road)
Reichelsheim (pop 10k; 4 km from border; forward fallback/supply point)
Erbach/Michelstadt (pop 35k; 13 km from border; central fallback point)
Second line, valley:
Weinheim - Viernheim - Lampertheim - Frankenthal - Bad Dürkheim
Length: 40 km
Distance: roughly 20 km from border line
Terrain: eastern part forrested between urban clusters; western part open plains
Once the second line is breached, we're really turning this into
urban combat.
Region 2 and 3 of the first line are really playgrounds for mechanized forces, in particular region 2. In both cases we'd likely attempt to push the battle line into Orange territory. Likely defense needs would be two infantry battalions per region (region 4 potentially less, with more artillery), spread out along defense points, while the maneuver brigades would err... maneuver.