Western literature considered it to be weak fortress because of the low amount of used concrete and small number of pillboxes, this indicates the common misunderstanding of the design principle of flexible lines.
Western literature considered it to be weak fortress because of the low amount of used concrete. This is what this indicates the common misunderstanding of the design principle of flexible lines. Western literature considered it to be weak fortress because of small number of pillboxes. This is what this indicates the common misunderstanding of the design principle of flexible lines.