I'd recommend perusing a contemporary analysis which I've uploaded as well as a modern one which I've summarized to get the necessary background to understand the Czech defensive scheme. Be advised that the contemporary document has a lot of images embedded.
Briefly, a few quick details. The Czech defensive works generally were not able to fire directly to their front, but only to the sides. Neighboring works were to fire obliquely to clear the area to the front. Sort of "I'll scratch your back, you scratch mine" system. This was designed to minimize the vulnerability of the pillboxes to direct fire weapons such as anti-tank guns and the like. This works very well if deployed in great depth, but the Czech frontier was so long and the fortification effort had begun only in 1936 that they were usually deployed in much shallower belts with the intent to deepen them as time permitted.
VII. Korps was deployed along the Bavarian border and I believe that these photos were taken in this region which wasn't heavily fortified by the Czechs.
Here we have a group of three LO vz. 37 A-180z pill-boxes defending a section of railroad near Volary which is in the northwest of Bohemia (Sector 195, Objects 65-67). Note the "ears" protecting the machinegun ports, this faced the expected direction of attack. So we can tell that this is a side view with the attacker coming from the left. Note the camouflage paint and the tree branches littering the gound that probably served as additional camouflage.
Here's a close-up of a LO vz. 37 A-180z between Lenorou and Zátoní (Sector 191, Object 16). Note the barbed-wire apron on the flank (foreground) and the cut vegetation as additional camouflage. It appears to be on the top of a hill or ridge with a valley to its front (left side).
Here's a view of what appears to be a recently completed LO vz. 37. Note the lack of any kind of camouflage and the recently turned dirt at the base.
This one also appears to be recently completed since it lacks camouflage paint. The tree stumps to its front are rather puzzling since they'd allow any attacker to move forward without exposure to fire from the pillbox. I can only conclude that this was finished so recently that time didn't permit the logs and stumps to be removed before the German occupation.
This is one of the most interesting ones as it shows a LO vz. 37 A-180z near Krenova (Sector 195, Object 16) connected with a trench and also seems to have been finished recently. Note the minimal barbed wire surrounding it.
Here's a LO vz. 37 A-140z near Volary (Sector 195, Object 63) with what appears to be a camouflage net draped over it facing the enemy.
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