The Bar-Lev Line (Hebrew: קו בר לב‎, Kav Bar Lev) was a chain of fortifications built by Israel along the eastern coast of the Suez Canal after it captured the Sinai Peninsula from Egypt during the 1967 Six-Day War.

It was considered impregnable and was a symbol of Israeli military perfection.

It was overrun in 1973 by the Egyptian military during Operation Badr.

The Bar-Lev Line evolved from a group of rudimentary fortifications placed along the canal line. In response to Egyptian artillery bombardments during the War of Attrition, Israel developed the fortifications into an elaborate defence system spanning 150 km (93 mi) along Suez Canal, with the exception of the Great Bitter Lake (where a canal crossing was unlikely due to the width of the lake).

The Bar-Lev Line was designed to defend against any major Egyptian assault across the canal, and was expected to function as a "graveyard for Egyptian troops".

In his book 'The Yom Kippur War: The Epic Encounter That Transformed the Middle East', historian Abraham Rabinovich posits that the Bar-Lev line was a blunder—too lightly manned to be an effective defensive line and too heavily manned to be an expendable tripwire. Moreover, it can be argued that the concept of the line was counter-intuitive to the strengths of Israeli battle tactics, which, at their core, relied on agile mobile forces moving rapidly through the battlefield rather than utilizing a heavy reliance on fixed defences.

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