[Task and Position] [Order of Battle]
The 4th border brigade had the task to cover the Rhine river between Birsfelden (just SE of Basel) and Stein AG (Säckingen). It played an important role in the French plan "H", since it had to delay an enemy advance on the right flank of the division Gempen until the French VIIe corps d'armée had joined its position on the Gempen plateau.
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MAP]
With its nine infantry batallions, the 4th border brigade was as big as the standard Swiss divisio, but was missing the indirect fire support, just as the other border brigades. One of his infantry regiments was under orders of the division Gempen.
A part of its position would have been under the cover of the artillery of the 4th division.

| Men | 7'337 |
| LMG | 276 |
| Laf LMG | 81 |
| sMG | 141 |
| 81mm Mortar | 20 |
| 47mm ATG | 22 |
| 75mm Feldgeschütz | 0 |
| 105mm sch mot Kan | 0 |
| 120mm Feldhaubitze | 0 |
| 150mm Feldhaubitze | 0 |
Commanding Officer: Colonel Spinnler.
[Last Update 30.08.2010]