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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".

Israeli planners estimated it would take at least 24 hours, probably a full 48 hours for the Egyptians to breach the sand wall and establish a bridge across the canal.

During the Yom Kippur War (October 1973 War) [...] were able to easily overrun the Bar Lev Line in less than 2 hours.